Finding the Fourth Proportional to 31,781.48, 47,665.47 and 12,053.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,781.48 : 47,665.47 = 12,053.12 : x
2. Step 2: Convert to fraction form
   31,781.48/47,665.47 = 12,053.12/x
3. Step 3: Cross multiply
   31,781.48x = 47,665.47 × 12,053.12
4. Step 4: Simplify right side
   31,781.48x = 574,517,629.77
5. Step 5: Solve for x
   x = 574,517,629.77/31,781.48
6. Step 6: Final answer
   x = 18,077.12