Finding the Fourth Proportional to 10,680.72, 16,013.16 and 8,045.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.72 : 16,013.16 = 8,045.52 : x
2. Step 2: Convert to fraction form
   10,680.72/16,013.16 = 8,045.52/x
3. Step 3: Cross multiply
   10,680.72x = 16,013.16 × 8,045.52
4. Step 4: Simplify right side
   10,680.72x = 128,834,199.04
5. Step 5: Solve for x
   x = 128,834,199.04/10,680.72
6. Step 6: Final answer
   x = 12,062.31