Finding the Fourth Proportional to 14,571.61, 21,862.01 and 5,211.43

Step by Step Solution

1. Step 1: Write the proportion equation
   14,571.61 : 21,862.01 = 5,211.43 : x
2. Step 2: Convert to fraction form
   14,571.61/21,862.01 = 5,211.43/x
3. Step 3: Cross multiply
   14,571.61x = 21,862.01 × 5,211.43
4. Step 4: Simplify right side
   14,571.61x = 113,932,293.15
5. Step 5: Solve for x
   x = 113,932,293.15/14,571.61
6. Step 6: Final answer
   x = 7,818.79