Finding the Fourth Proportional to 21,118.89, 29,155.64 and 14,414.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,118.89 : 29,155.64 = 14,414.52 : x
2. Step 2: Convert to fraction form
   21,118.89/29,155.64 = 14,414.52/x
3. Step 3: Cross multiply
   21,118.89x = 29,155.64 × 14,414.52
4. Step 4: Simplify right side
   21,118.89x = 420,264,483.82
5. Step 5: Solve for x
   x = 420,264,483.82/21,118.89
6. Step 6: Final answer
   x = 19,899.93