Finding the Fourth Proportional to 10,147.24, 15,221.31 and 3,905.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147.24 : 15,221.31 = 3,905.02 : x
2. Step 2: Convert to fraction form
   10,147.24/15,221.31 = 3,905.02/x
3. Step 3: Cross multiply
   10,147.24x = 15,221.31 × 3,905.02
4. Step 4: Simplify right side
   10,147.24x = 59,439,443.87
5. Step 5: Solve for x
   x = 59,439,443.87/10,147.24
6. Step 6: Final answer
   x = 5,857.70