Finding the Fourth Proportional to 8,886.69, 12,262.28 and 5,906.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.69 : 12,262.28 = 5,906.91 : x
2. Step 2: Convert to fraction form
   8,886.69/12,262.28 = 5,906.91/x
3. Step 3: Cross multiply
   8,886.69x = 12,262.28 × 5,906.91
4. Step 4: Simplify right side
   8,886.69x = 72,432,154.82
5. Step 5: Solve for x
   x = 72,432,154.82/8,886.69
6. Step 6: Final answer
   x = 8,150.63