Finding the Fourth Proportional to 9,807.08, 13,531.58 and 5,557.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,807.08 : 13,531.58 = 5,557.78 : x
2. Step 2: Convert to fraction form
   9,807.08/13,531.58 = 5,557.78/x
3. Step 3: Cross multiply
   9,807.08x = 13,531.58 × 5,557.78
4. Step 4: Simplify right side
   9,807.08x = 75,205,483.07
5. Step 5: Solve for x
   x = 75,205,483.07/9,807.08
6. Step 6: Final answer
   x = 7,668.49