Finding the Fourth Proportional to 8,216.58, 12,339.72 and 7,557.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216.58 : 12,339.72 = 7,557.27 : x
2. Step 2: Convert to fraction form
   8,216.58/12,339.72 = 7,557.27/x
3. Step 3: Cross multiply
   8,216.58x = 12,339.72 × 7,557.27
4. Step 4: Simplify right side
   8,216.58x = 93,254,595.76
5. Step 5: Solve for x
   x = 93,254,595.76/8,216.58
6. Step 6: Final answer
   x = 11,349.56