Finding the Fourth Proportional to 9,580.80, 13,218.74 and 5,547.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,580.80 : 13,218.74 = 5,547.30 : x
2. Step 2: Convert to fraction form
   9,580.80/13,218.74 = 5,547.30/x
3. Step 3: Cross multiply
   9,580.80x = 13,218.74 × 5,547.30
4. Step 4: Simplify right side
   9,580.80x = 73,328,288.67
5. Step 5: Solve for x
   x = 73,328,288.67/9,580.80
6. Step 6: Final answer
   x = 7,653.67