Finding the Fourth Proportional to 21,330.29, 29,443.83 and 18,334.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,330.29 : 29,443.83 = 18,334.10 : x
2. Step 2: Convert to fraction form
   21,330.29/29,443.83 = 18,334.10/x
3. Step 3: Cross multiply
   21,330.29x = 29,443.83 × 18,334.10
4. Step 4: Simplify right side
   21,330.29x = 539,826,123.60
5. Step 5: Solve for x
   x = 539,826,123.60/21,330.29
6. Step 6: Final answer
   x = 25,307.96