Finding the Fourth Proportional to 15,798.06, 21,801.27 and 9,510.78

Step by Step Solution

1. Step 1: Write the proportion equation
   15,798.06 : 21,801.27 = 9,510.78 : x
2. Step 2: Convert to fraction form
   15,798.06/21,801.27 = 9,510.78/x
3. Step 3: Cross multiply
   15,798.06x = 21,801.27 × 9,510.78
4. Step 4: Simplify right side
   15,798.06x = 207,347,082.69
5. Step 5: Solve for x
   x = 207,347,082.69/15,798.06
6. Step 6: Final answer
   x = 13,124.84