Finding the Fourth Proportional to 21,915.24, 32,869.62 and 8,061

Step by Step Solution

1. Step 1: Write the proportion equation
   21,915.24 : 32,869.62 = 8,061 : x
2. Step 2: Convert to fraction form
   21,915.24/32,869.62 = 8,061/x
3. Step 3: Cross multiply
   21,915.24x = 32,869.62 × 8,061
4. Step 4: Simplify right side
   21,915.24x = 264,962,006.82
5. Step 5: Solve for x
   x = 264,962,006.82/21,915.24
6. Step 6: Final answer
   x = 12,090.31