Finding the Fourth Proportional to 4,326.10, 5,970.78 and 4,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,326.10 : 5,970.78 = 4,128.89 : x
2. Step 2: Convert to fraction form
   4,326.10/5,970.78 = 4,128.89/x
3. Step 3: Cross multiply
   4,326.10x = 5,970.78 × 4,128.89
4. Step 4: Simplify right side
   4,326.10x = 24,652,643.34
5. Step 5: Solve for x
   x = 24,652,643.34/4,326.10
6. Step 6: Final answer
   x = 5,698.58