Finding the Fourth Proportional to 28,139.10, 38,836.17 and 17,532.15

Step by Step Solution

1. Step 1: Write the proportion equation
   28,139.10 : 38,836.17 = 17,532.15 : x
2. Step 2: Convert to fraction form
   28,139.10/38,836.17 = 17,532.15/x
3. Step 3: Cross multiply
   28,139.10x = 38,836.17 × 17,532.15
4. Step 4: Simplify right side
   28,139.10x = 680,881,557.87
5. Step 5: Solve for x
   x = 680,881,557.87/28,139.10
6. Step 6: Final answer
   x = 24,196.99