Finding the Fourth Proportional to 10,626.66, 15,947.28 and 5,436.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,626.66 : 15,947.28 = 5,436.18 : x
2. Step 2: Convert to fraction form
   10,626.66/15,947.28 = 5,436.18/x
3. Step 3: Cross multiply
   10,626.66x = 15,947.28 × 5,436.18
4. Step 4: Simplify right side
   10,626.66x = 86,692,284.59
5. Step 5: Solve for x
   x = 86,692,284.59/10,626.66
6. Step 6: Final answer
   x = 8,158.00