Finding the Fourth Proportional to 9,773.34, 13,486.14 and 5,580.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,773.34 : 13,486.14 = 5,580.78 : x
2. Step 2: Convert to fraction form
   9,773.34/13,486.14 = 5,580.78/x
3. Step 3: Cross multiply
   9,773.34x = 13,486.14 × 5,580.78
4. Step 4: Simplify right side
   9,773.34x = 75,263,180.39
5. Step 5: Solve for x
   x = 75,263,180.39/9,773.34
6. Step 6: Final answer
   x = 7,700.87