Finding the Fourth Proportional to 9,045.72, 12,483.78 and 5,217.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,045.72 : 12,483.78 = 5,217.99 : x
2. Step 2: Convert to fraction form
   9,045.72/12,483.78 = 5,217.99/x
3. Step 3: Cross multiply
   9,045.72x = 12,483.78 × 5,217.99
4. Step 4: Simplify right side
   9,045.72x = 65,140,239.20
5. Step 5: Solve for x
   x = 65,140,239.20/9,045.72
6. Step 6: Final answer
   x = 7,201.22