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Finding the Fourth Proportional to 28,499.26, 42,748.89 and 7,722.76

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Solution

The fourth proportional to 28,499.26, 42,748.89 and 7,722.76 is: 11,584.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.26 : 42,748.89 = 7,722.76 : x
  2. Step 2: Convert to fraction form
    28,499.26/42,748.89 = 7,722.76/x
  3. Step 3: Cross multiply
    28,499.26x = 42,748.89 × 7,722.76
  4. Step 4: Simplify right side
    28,499.26x = 330,139,417.74
  5. Step 5: Solve for x
    x = 330,139,417.74/28,499.26
  6. Step 6: Final answer
    x = 11,584.14

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