Finding the Fourth Proportional to 12,678.68, 17,494.62 and 7,088.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,678.68 : 17,494.62 = 7,088.60 : x
2. Step 2: Convert to fraction form
   12,678.68/17,494.62 = 7,088.60/x
3. Step 3: Cross multiply
   12,678.68x = 17,494.62 × 7,088.60
4. Step 4: Simplify right side
   12,678.68x = 124,012,363.33
5. Step 5: Solve for x
   x = 124,012,363.33/12,678.68
6. Step 6: Final answer
   x = 9,781.17