Finding the Fourth Proportional to 9,578.45, 13,218.22 and 5,598.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,578.45 : 13,218.22 = 5,598.76 : x
2. Step 2: Convert to fraction form
   9,578.45/13,218.22 = 5,598.76/x
3. Step 3: Cross multiply
   9,578.45x = 13,218.22 × 5,598.76
4. Step 4: Simplify right side
   9,578.45x = 74,005,641.41
5. Step 5: Solve for x
   x = 74,005,641.41/9,578.45
6. Step 6: Final answer
   x = 7,726.26