Finding the Fourth Proportional to 8,365.39, 12,536.45 and 5,557.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,365.39 : 12,536.45 = 5,557.53 : x
2. Step 2: Convert to fraction form
   8,365.39/12,536.45 = 5,557.53/x
3. Step 3: Cross multiply
   8,365.39x = 12,536.45 × 5,557.53
4. Step 4: Simplify right side
   8,365.39x = 69,671,650.89
5. Step 5: Solve for x
   x = 69,671,650.89/8,365.39
6. Step 6: Final answer
   x = 8,328.56