Finding the Fourth Proportional to 10,510.47, 15,719.23 and 9,348.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,510.47 : 15,719.23 = 9,348.63 : x
2. Step 2: Convert to fraction form
   10,510.47/15,719.23 = 9,348.63/x
3. Step 3: Cross multiply
   10,510.47x = 15,719.23 × 9,348.63
4. Step 4: Simplify right side
   10,510.47x = 146,953,265.15
5. Step 5: Solve for x
   x = 146,953,265.15/10,510.47
6. Step 6: Final answer
   x = 13,981.61