Finding the Fourth Proportional to 8,835.83, 12,188.37 and 5,518.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,835.83 : 12,188.37 = 5,518.07 : x
2. Step 2: Convert to fraction form
   8,835.83/12,188.37 = 5,518.07/x
3. Step 3: Cross multiply
   8,835.83x = 12,188.37 × 5,518.07
4. Step 4: Simplify right side
   8,835.83x = 67,256,278.85
5. Step 5: Solve for x
   x = 67,256,278.85/8,835.83
6. Step 6: Final answer
   x = 7,611.77