Finding the Fourth Proportional to 9,389.31, 12,956.88 and 5,614.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.31 : 12,956.88 = 5,614.56 : x
2. Step 2: Convert to fraction form
   9,389.31/12,956.88 = 5,614.56/x
3. Step 3: Cross multiply
   9,389.31x = 12,956.88 × 5,614.56
4. Step 4: Simplify right side
   9,389.31x = 72,747,180.17
5. Step 5: Solve for x
   x = 72,747,180.17/9,389.31
6. Step 6: Final answer
   x = 7,747.87