Finding the Fourth Proportional to 8,830.91, 12,188.78 and 5,056.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,830.91 : 12,188.78 = 5,056.26 : x
2. Step 2: Convert to fraction form
   8,830.91/12,188.78 = 5,056.26/x
3. Step 3: Cross multiply
   8,830.91x = 12,188.78 × 5,056.26
4. Step 4: Simplify right side
   8,830.91x = 61,629,615.48
5. Step 5: Solve for x
   x = 61,629,615.48/8,830.91
6. Step 6: Final answer
   x = 6,978.86