Finding the Fourth Proportional to 9,772.46, 13,486.71 and 5,580.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,772.46 : 13,486.71 = 5,580.62 : x
2. Step 2: Convert to fraction form
   9,772.46/13,486.71 = 5,580.62/x
3. Step 3: Cross multiply
   9,772.46x = 13,486.71 × 5,580.62
4. Step 4: Simplify right side
   9,772.46x = 75,264,203.56
5. Step 5: Solve for x
   x = 75,264,203.56/9,772.46
6. Step 6: Final answer
   x = 7,701.66