Finding the Fourth Proportional to 8,859.56, 13,284.95 and 5,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,859.56 : 13,284.95 = 5,162.72 : x
2. Step 2: Convert to fraction form
   8,859.56/13,284.95 = 5,162.72/x
3. Step 3: Cross multiply
   8,859.56x = 13,284.95 × 5,162.72
4. Step 4: Simplify right side
   8,859.56x = 68,586,384.83
5. Step 5: Solve for x
   x = 68,586,384.83/8,859.56
6. Step 6: Final answer
   x = 7,741.52