Finding the Fourth Proportional to 12,468.69, 17,191.22 and 7,985.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,468.69 : 17,191.22 = 7,985.07 : x
2. Step 2: Convert to fraction form
   12,468.69/17,191.22 = 7,985.07/x
3. Step 3: Cross multiply
   12,468.69x = 17,191.22 × 7,985.07
4. Step 4: Simplify right side
   12,468.69x = 137,273,009.13
5. Step 5: Solve for x
   x = 137,273,009.13/12,468.69
6. Step 6: Final answer
   x = 11,009.42