Finding the Fourth Proportional to 10,146.78, 15,213.02 and 3,901.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,146.78 : 15,213.02 = 3,901.55 : x
2. Step 2: Convert to fraction form
   10,146.78/15,213.02 = 3,901.55/x
3. Step 3: Cross multiply
   10,146.78x = 15,213.02 × 3,901.55
4. Step 4: Simplify right side
   10,146.78x = 59,354,262.61
5. Step 5: Solve for x
   x = 59,354,262.61/10,146.78
6. Step 6: Final answer
   x = 5,849.57