Finding the Fourth Proportional to 6,141.31, 8,478.61 and 4,722.23

Step by Step Solution

1. Step 1: Write the proportion equation
   6,141.31 : 8,478.61 = 4,722.23 : x
2. Step 2: Convert to fraction form
   6,141.31/8,478.61 = 4,722.23/x
3. Step 3: Cross multiply
   6,141.31x = 8,478.61 × 4,722.23
4. Step 4: Simplify right side
   6,141.31x = 40,037,955.89
5. Step 5: Solve for x
   x = 40,037,955.89/6,141.31
6. Step 6: Final answer
   x = 6,519.45