Finding the Fourth Proportional to 10,378.50, 15,567.89 and 3,453

Step by Step Solution

1. Step 1: Write the proportion equation
   10,378.50 : 15,567.89 = 3,453 : x
2. Step 2: Convert to fraction form
   10,378.50/15,567.89 = 3,453/x
3. Step 3: Cross multiply
   10,378.50x = 15,567.89 × 3,453
4. Step 4: Simplify right side
   10,378.50x = 53,755,906.91
5. Step 5: Solve for x
   x = 53,755,906.91/10,378.50
6. Step 6: Final answer
   x = 5,179.54