Finding the Fourth Proportional to 31,561.98, 47,337.39 and 10,499.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,561.98 : 47,337.39 = 10,499.91 : x
2. Step 2: Convert to fraction form
   31,561.98/47,337.39 = 10,499.91/x
3. Step 3: Cross multiply
   31,561.98x = 47,337.39 × 10,499.91
4. Step 4: Simplify right side
   31,561.98x = 497,038,334.63
5. Step 5: Solve for x
   x = 497,038,334.63/31,561.98
6. Step 6: Final answer
   x = 15,748.01