Finding the Fourth Proportional to 14,665.47, 21,997.98 and 3,572.18

Step by Step Solution

1. Step 1: Write the proportion equation
   14,665.47 : 21,997.98 = 3,572.18 : x
2. Step 2: Convert to fraction form
   14,665.47/21,997.98 = 3,572.18/x
3. Step 3: Cross multiply
   14,665.47x = 21,997.98 × 3,572.18
4. Step 4: Simplify right side
   14,665.47x = 78,580,634.21
5. Step 5: Solve for x
   x = 78,580,634.21/14,665.47
6. Step 6: Final answer
   x = 5,358.21