Finding the Fourth Proportional to 21,943.89, 32,909.55 and 7,154.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,943.89 : 32,909.55 = 7,154.10 : x
2. Step 2: Convert to fraction form
   21,943.89/32,909.55 = 7,154.10/x
3. Step 3: Cross multiply
   21,943.89x = 32,909.55 × 7,154.10
4. Step 4: Simplify right side
   21,943.89x = 235,438,211.66
5. Step 5: Solve for x
   x = 235,438,211.66/21,943.89
6. Step 6: Final answer
   x = 10,729.10