Finding the Fourth Proportional to 12,315.52, 18,472.72 and 4,523.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.52 : 18,472.72 = 4,523.76 : x
2. Step 2: Convert to fraction form
   12,315.52/18,472.72 = 4,523.76/x
3. Step 3: Cross multiply
   12,315.52x = 18,472.72 × 4,523.76
4. Step 4: Simplify right side
   12,315.52x = 83,566,151.83
5. Step 5: Solve for x
   x = 83,566,151.83/12,315.52
6. Step 6: Final answer
   x = 6,785.43