Finding the Fourth Proportional to 10,391.30, 15,587.01 and 3,465.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,391.30 : 15,587.01 = 3,465.78 : x
2. Step 2: Convert to fraction form
   10,391.30/15,587.01 = 3,465.78/x
3. Step 3: Cross multiply
   10,391.30x = 15,587.01 × 3,465.78
4. Step 4: Simplify right side
   10,391.30x = 54,021,147.52
5. Step 5: Solve for x
   x = 54,021,147.52/10,391.30
6. Step 6: Final answer
   x = 5,198.69