Finding the Fourth Proportional to 21,565.73, 29,601.72 and 19,155.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,565.73 : 29,601.72 = 19,155.17 : x
2. Step 2: Convert to fraction form
   21,565.73/29,601.72 = 19,155.17/x
3. Step 3: Cross multiply
   21,565.73x = 29,601.72 × 19,155.17
4. Step 4: Simplify right side
   21,565.73x = 567,026,052.90
5. Step 5: Solve for x
   x = 567,026,052.90/21,565.73
6. Step 6: Final answer
   x = 26,292.92