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Finding the Fourth Proportional to 19,388.79, 26,758.49 and 11,839.54

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Solution

The fourth proportional to 19,388.79, 26,758.49 and 11,839.54 is: 16,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.79 : 26,758.49 = 11,839.54 : x
  2. Step 2: Convert to fraction form
    19,388.79/26,758.49 = 11,839.54/x
  3. Step 3: Cross multiply
    19,388.79x = 26,758.49 × 11,839.54
  4. Step 4: Simplify right side
    19,388.79x = 316,808,311.93
  5. Step 5: Solve for x
    x = 316,808,311.93/19,388.79
  6. Step 6: Final answer
    x = 16,339.76

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