Finding the Fourth Proportional to 31,057.29, 46,555.56 and 12,331.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.29 : 46,555.56 = 12,331.10 : x
2. Step 2: Convert to fraction form
   31,057.29/46,555.56 = 12,331.10/x
3. Step 3: Cross multiply
   31,057.29x = 46,555.56 × 12,331.10
4. Step 4: Simplify right side
   31,057.29x = 574,081,382.30
5. Step 5: Solve for x
   x = 574,081,382.30/31,057.29
6. Step 6: Final answer
   x = 18,484.59