Finding the Fourth Proportional to 9,105.47, 13,663.52 and 3,840.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.47 : 13,663.52 = 3,840.15 : x
2. Step 2: Convert to fraction form
   9,105.47/13,663.52 = 3,840.15/x
3. Step 3: Cross multiply
   9,105.47x = 13,663.52 × 3,840.15
4. Step 4: Simplify right side
   9,105.47x = 52,469,947.13
5. Step 5: Solve for x
   x = 52,469,947.13/9,105.47
6. Step 6: Final answer
   x = 5,762.47