Finding the Fourth Proportional to 21,368.88, 32,059.80 and 10,272.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,368.88 : 32,059.80 = 10,272.42 : x
2. Step 2: Convert to fraction form
   21,368.88/32,059.80 = 10,272.42/x
3. Step 3: Cross multiply
   21,368.88x = 32,059.80 × 10,272.42
4. Step 4: Simplify right side
   21,368.88x = 329,331,730.72
5. Step 5: Solve for x
   x = 329,331,730.72/21,368.88
6. Step 6: Final answer
   x = 15,411.75