Finding the Fourth Proportional to 21,510.55, 32,266.37 and 10,415.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510.55 : 32,266.37 = 10,415.17 : x
2. Step 2: Convert to fraction form
   21,510.55/32,266.37 = 10,415.17/x
3. Step 3: Cross multiply
   21,510.55x = 32,266.37 × 10,415.17
4. Step 4: Simplify right side
   21,510.55x = 336,059,728.83
5. Step 5: Solve for x
   x = 336,059,728.83/21,510.55
6. Step 6: Final answer
   x = 15,623.02