Finding the Fourth Proportional to 17,446.59, 26,155.17 and 7,578.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,446.59 : 26,155.17 = 7,578.50 : x
2. Step 2: Convert to fraction form
   17,446.59/26,155.17 = 7,578.50/x
3. Step 3: Cross multiply
   17,446.59x = 26,155.17 × 7,578.50
4. Step 4: Simplify right side
   17,446.59x = 198,216,825.07
5. Step 5: Solve for x
   x = 198,216,825.07/17,446.59
6. Step 6: Final answer
   x = 11,361.35