Finding the Fourth Proportional to 4,909.78, 7,321.55 and 4,866.04

Step by Step Solution

1. Step 1: Write the proportion equation
   4,909.78 : 7,321.55 = 4,866.04 : x
2. Step 2: Convert to fraction form
   4,909.78/7,321.55 = 4,866.04/x
3. Step 3: Cross multiply
   4,909.78x = 7,321.55 × 4,866.04
4. Step 4: Simplify right side
   4,909.78x = 35,626,955.16
5. Step 5: Solve for x
   x = 35,626,955.16/4,909.78
6. Step 6: Final answer
   x = 7,256.32