Finding the Fourth Proportional to 9,344.99, 12,899.20 and 5,569.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,344.99 : 12,899.20 = 5,569.34 : x
2. Step 2: Convert to fraction form
   9,344.99/12,899.20 = 5,569.34/x
3. Step 3: Cross multiply
   9,344.99x = 12,899.20 × 5,569.34
4. Step 4: Simplify right side
   9,344.99x = 71,840,030.53
5. Step 5: Solve for x
   x = 71,840,030.53/9,344.99
6. Step 6: Final answer
   x = 7,687.54