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Finding the Fourth Proportional to 8,931.24, 13,392.24 and 5,240.70

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Solution

The fourth proportional to 8,931.24, 13,392.24 and 5,240.70 is: 7,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.24 : 13,392.24 = 5,240.70 : x
  2. Step 2: Convert to fraction form
    8,931.24/13,392.24 = 5,240.70/x
  3. Step 3: Cross multiply
    8,931.24x = 13,392.24 × 5,240.70
  4. Step 4: Simplify right side
    8,931.24x = 70,184,712.17
  5. Step 5: Solve for x
    x = 70,184,712.17/8,931.24
  6. Step 6: Final answer
    x = 7,858.34

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