Finding the Fourth Proportional to 5,618.16, 8,422.68 and 5,003.07

Step by Step Solution

1. Step 1: Write the proportion equation
   5,618.16 : 8,422.68 = 5,003.07 : x
2. Step 2: Convert to fraction form
   5,618.16/8,422.68 = 5,003.07/x
3. Step 3: Cross multiply
   5,618.16x = 8,422.68 × 5,003.07
4. Step 4: Simplify right side
   5,618.16x = 42,139,244.80
5. Step 5: Solve for x
   x = 42,139,244.80/5,618.16
6. Step 6: Final answer
   x = 7,500.54