Finding the Fourth Proportional to 31,779.99, 47,658.78 and 9,587.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,779.99 : 47,658.78 = 9,587.61 : x
2. Step 2: Convert to fraction form
   31,779.99/47,658.78 = 9,587.61/x
3. Step 3: Cross multiply
   31,779.99x = 47,658.78 × 9,587.61
4. Step 4: Simplify right side
   31,779.99x = 456,933,795.72
5. Step 5: Solve for x
   x = 456,933,795.72/31,779.99
6. Step 6: Final answer
   x = 14,378.03