Finding the Fourth Proportional to 12,468.10, 17,201.72 and 7,090

Step by Step Solution

1. Step 1: Write the proportion equation
   12,468.10 : 17,201.72 = 7,090 : x
2. Step 2: Convert to fraction form
   12,468.10/17,201.72 = 7,090/x
3. Step 3: Cross multiply
   12,468.10x = 17,201.72 × 7,090
4. Step 4: Simplify right side
   12,468.10x = 121,960,194.80
5. Step 5: Solve for x
   x = 121,960,194.80/12,468.10
6. Step 6: Final answer
   x = 9,781.78