Finding the Fourth Proportional to 12,328.91, 17,009.12 and 7,851.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,328.91 : 17,009.12 = 7,851.86 : x
2. Step 2: Convert to fraction form
   12,328.91/17,009.12 = 7,851.86/x
3. Step 3: Cross multiply
   12,328.91x = 17,009.12 × 7,851.86
4. Step 4: Simplify right side
   12,328.91x = 133,553,189.70
5. Step 5: Solve for x
   x = 133,553,189.70/12,328.91
6. Step 6: Final answer
   x = 10,832.52