Finding the Fourth Proportional to 4,767.58, 7,111.18 and 4,621.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,767.58 : 7,111.18 = 4,621.78 : x
2. Step 2: Convert to fraction form
   4,767.58/7,111.18 = 4,621.78/x
3. Step 3: Cross multiply
   4,767.58x = 7,111.18 × 4,621.78
4. Step 4: Simplify right side
   4,767.58x = 32,866,309.50
5. Step 5: Solve for x
   x = 32,866,309.50/4,767.58
6. Step 6: Final answer
   x = 6,893.71