Finding the Fourth Proportional to 5,401.52, 8,103.72 and 1,938.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.52 : 8,103.72 = 1,938.80 : x
2. Step 2: Convert to fraction form
   5,401.52/8,103.72 = 1,938.80/x
3. Step 3: Cross multiply
   5,401.52x = 8,103.72 × 1,938.80
4. Step 4: Simplify right side
   5,401.52x = 15,711,492.34
5. Step 5: Solve for x
   x = 15,711,492.34/5,401.52
6. Step 6: Final answer
   x = 2,908.72