Finding the Fourth Proportional to 21,761.55, 32,619.51 and 9,118.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,761.55 : 32,619.51 = 9,118.59 : x
2. Step 2: Convert to fraction form
   21,761.55/32,619.51 = 9,118.59/x
3. Step 3: Cross multiply
   21,761.55x = 32,619.51 × 9,118.59
4. Step 4: Simplify right side
   21,761.55x = 297,443,937.69
5. Step 5: Solve for x
   x = 297,443,937.69/21,761.55
6. Step 6: Final answer
   x = 13,668.32