Finding the Fourth Proportional to 31,057, 46,592.79 and 10,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057 : 46,592.79 = 10,280.50 : x
2. Step 2: Convert to fraction form
   31,057/46,592.79 = 10,280.50/x
3. Step 3: Cross multiply
   31,057x = 46,592.79 × 10,280.50
4. Step 4: Simplify right side
   31,057x = 478,997,177.60
5. Step 5: Solve for x
   x = 478,997,177.60/31,057
6. Step 6: Final answer
   x = 15,423.16