Finding the Fourth Proportional to 7,158.16, 9,875.89 and 4,326.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,158.16 : 9,875.89 = 4,326.40 : x
2. Step 2: Convert to fraction form
   7,158.16/9,875.89 = 4,326.40/x
3. Step 3: Cross multiply
   7,158.16x = 9,875.89 × 4,326.40
4. Step 4: Simplify right side
   7,158.16x = 42,727,050.50
5. Step 5: Solve for x
   x = 42,727,050.50/7,158.16
6. Step 6: Final answer
   x = 5,969.00