Finding the Fourth Proportional to 9,393.79, 12,964.53 and 5,616.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,393.79 : 12,964.53 = 5,616.91 : x
2. Step 2: Convert to fraction form
   9,393.79/12,964.53 = 5,616.91/x
3. Step 3: Cross multiply
   9,393.79x = 12,964.53 × 5,616.91
4. Step 4: Simplify right side
   9,393.79x = 72,820,598.20
5. Step 5: Solve for x
   x = 72,820,598.20/9,393.79
6. Step 6: Final answer
   x = 7,751.99