Finding the Fourth Proportional to 10,314.56, 15,471.78 and 3,389

Step by Step Solution

1. Step 1: Write the proportion equation
   10,314.56 : 15,471.78 = 3,389 : x
2. Step 2: Convert to fraction form
   10,314.56/15,471.78 = 3,389/x
3. Step 3: Cross multiply
   10,314.56x = 15,471.78 × 3,389
4. Step 4: Simplify right side
   10,314.56x = 52,433,862.42
5. Step 5: Solve for x
   x = 52,433,862.42/10,314.56
6. Step 6: Final answer
   x = 5,083.48