Finding the Fourth Proportional to 8,538.18, 11,789.96 and 5,356.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538.18 : 11,789.96 = 5,356.83 : x
2. Step 2: Convert to fraction form
   8,538.18/11,789.96 = 5,356.83/x
3. Step 3: Cross multiply
   8,538.18x = 11,789.96 × 5,356.83
4. Step 4: Simplify right side
   8,538.18x = 63,156,811.43
5. Step 5: Solve for x
   x = 63,156,811.43/8,538.18
6. Step 6: Final answer
   x = 7,396.99