Finding the Fourth Proportional to 5,315.63, 7,982.55 and 5,038.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,315.63 : 7,982.55 = 5,038.61 : x
2. Step 2: Convert to fraction form
   5,315.63/7,982.55 = 5,038.61/x
3. Step 3: Cross multiply
   5,315.63x = 7,982.55 × 5,038.61
4. Step 4: Simplify right side
   5,315.63x = 40,220,916.34
5. Step 5: Solve for x
   x = 40,220,916.34/5,315.63
6. Step 6: Final answer
   x = 7,566.55