Finding the Fourth Proportional to 31,435.83, 47,128.32 and 10,362.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,435.83 : 47,128.32 = 10,362.72 : x
2. Step 2: Convert to fraction form
   31,435.83/47,128.32 = 10,362.72/x
3. Step 3: Cross multiply
   31,435.83x = 47,128.32 × 10,362.72
4. Step 4: Simplify right side
   31,435.83x = 488,377,584.23
5. Step 5: Solve for x
   x = 488,377,584.23/31,435.83
6. Step 6: Final answer
   x = 15,535.70