Finding the Fourth Proportional to 31,590.72, 47,352.78 and 10,525.14

Step by Step Solution

1. Step 1: Write the proportion equation
   31,590.72 : 47,352.78 = 10,525.14 : x
2. Step 2: Convert to fraction form
   31,590.72/47,352.78 = 10,525.14/x
3. Step 3: Cross multiply
   31,590.72x = 47,352.78 × 10,525.14
4. Step 4: Simplify right side
   31,590.72x = 498,394,638.89
5. Step 5: Solve for x
   x = 498,394,638.89/31,590.72
6. Step 6: Final answer
   x = 15,776.62