Finding the Fourth Proportional to 31,150.91, 46,731.84 and 13,392.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,150.91 : 46,731.84 = 13,392.47 : x
2. Step 2: Convert to fraction form
   31,150.91/46,731.84 = 13,392.47/x
3. Step 3: Cross multiply
   31,150.91x = 46,731.84 × 13,392.47
4. Step 4: Simplify right side
   31,150.91x = 625,854,531.59
5. Step 5: Solve for x
   x = 625,854,531.59/31,150.91
6. Step 6: Final answer
   x = 20,091.05