Finding the Fourth Proportional to 8,715.53, 12,027.69 and 5,360.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,715.53 : 12,027.69 = 5,360.31 : x
2. Step 2: Convert to fraction form
   8,715.53/12,027.69 = 5,360.31/x
3. Step 3: Cross multiply
   8,715.53x = 12,027.69 × 5,360.31
4. Step 4: Simplify right side
   8,715.53x = 64,472,146.98
5. Step 5: Solve for x
   x = 64,472,146.98/8,715.53
6. Step 6: Final answer
   x = 7,397.39