Finding the Fourth Proportional to 28,035.57, 42,061.47 and 8,314.60

Step by Step Solution

1. Step 1: Write the proportion equation
   28,035.57 : 42,061.47 = 8,314.60 : x
2. Step 2: Convert to fraction form
   28,035.57/42,061.47 = 8,314.60/x
3. Step 3: Cross multiply
   28,035.57x = 42,061.47 × 8,314.60
4. Step 4: Simplify right side
   28,035.57x = 349,724,361.43
5. Step 5: Solve for x
   x = 349,724,361.43/28,035.57
6. Step 6: Final answer
   x = 12,474.31