Finding the Fourth Proportional to 21,505.86, 29,703.24 and 19,614.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,505.86 : 29,703.24 = 19,614.15 : x
2. Step 2: Convert to fraction form
   21,505.86/29,703.24 = 19,614.15/x
3. Step 3: Cross multiply
   21,505.86x = 29,703.24 × 19,614.15
4. Step 4: Simplify right side
   21,505.86x = 582,603,804.85
5. Step 5: Solve for x
   x = 582,603,804.85/21,505.86
6. Step 6: Final answer
   x = 27,090.47