Finding the Fourth Proportional to 9,053.68, 12,492.42 and 5,518

Step by Step Solution

1. Step 1: Write the proportion equation
   9,053.68 : 12,492.42 = 5,518 : x
2. Step 2: Convert to fraction form
   9,053.68/12,492.42 = 5,518/x
3. Step 3: Cross multiply
   9,053.68x = 12,492.42 × 5,518
4. Step 4: Simplify right side
   9,053.68x = 68,933,173.56
5. Step 5: Solve for x
   x = 68,933,173.56/9,053.68
6. Step 6: Final answer
   x = 7,613.83