Finding the Fourth Proportional to 10,389.38, 15,587.31 and 3,468.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389.38 : 15,587.31 = 3,468.74 : x
2. Step 2: Convert to fraction form
   10,389.38/15,587.31 = 3,468.74/x
3. Step 3: Cross multiply
   10,389.38x = 15,587.31 × 3,468.74
4. Step 4: Simplify right side
   10,389.38x = 54,068,325.69
5. Step 5: Solve for x
   x = 54,068,325.69/10,389.38
6. Step 6: Final answer
   x = 5,204.19