Finding the Fourth Proportional to 28,414.55, 42,620.27 and 8,693.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,414.55 : 42,620.27 = 8,693.10 : x
2. Step 2: Convert to fraction form
   28,414.55/42,620.27 = 8,693.10/x
3. Step 3: Cross multiply
   28,414.55x = 42,620.27 × 8,693.10
4. Step 4: Simplify right side
   28,414.55x = 370,502,225.67
5. Step 5: Solve for x
   x = 370,502,225.67/28,414.55
6. Step 6: Final answer
   x = 13,039.18