Finding the Fourth Proportional to 9,051.36, 12,491.76 and 5,516.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,051.36 : 12,491.76 = 5,516.64 : x
2. Step 2: Convert to fraction form
   9,051.36/12,491.76 = 5,516.64/x
3. Step 3: Cross multiply
   9,051.36x = 12,491.76 × 5,516.64
4. Step 4: Simplify right side
   9,051.36x = 68,912,542.89
5. Step 5: Solve for x
   x = 68,912,542.89/9,051.36
6. Step 6: Final answer
   x = 7,613.50