Finding the Fourth Proportional to 2,809.50, 3,876.84 and 2,715.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,809.50 : 3,876.84 = 2,715.13 : x
2. Step 2: Convert to fraction form
   2,809.50/3,876.84 = 2,715.13/x
3. Step 3: Cross multiply
   2,809.50x = 3,876.84 × 2,715.13
4. Step 4: Simplify right side
   2,809.50x = 10,526,124.59
5. Step 5: Solve for x
   x = 10,526,124.59/2,809.50
6. Step 6: Final answer
   x = 3,746.62