Finding the Fourth Proportional to 8,890.86, 12,268.55 and 5,698.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.86 : 12,268.55 = 5,698.52 : x
2. Step 2: Convert to fraction form
   8,890.86/12,268.55 = 5,698.52/x
3. Step 3: Cross multiply
   8,890.86x = 12,268.55 × 5,698.52
4. Step 4: Simplify right side
   8,890.86x = 69,912,530.45
5. Step 5: Solve for x
   x = 69,912,530.45/8,890.86
6. Step 6: Final answer
   x = 7,863.42