Finding the Fourth Proportional to 2,809.99, 3,877.52 and 2,715.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,809.99 : 3,877.52 = 2,715.63 : x
2. Step 2: Convert to fraction form
   2,809.99/3,877.52 = 2,715.63/x
3. Step 3: Cross multiply
   2,809.99x = 3,877.52 × 2,715.63
4. Step 4: Simplify right side
   2,809.99x = 10,529,909.64
5. Step 5: Solve for x
   x = 10,529,909.64/2,809.99
6. Step 6: Final answer
   x = 3,747.31