Finding the Fourth Proportional to 8,810.79, 12,159.39 and 5,227.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,810.79 : 12,159.39 = 5,227.86 : x
2. Step 2: Convert to fraction form
   8,810.79/12,159.39 = 5,227.86/x
3. Step 3: Cross multiply
   8,810.79x = 12,159.39 × 5,227.86
4. Step 4: Simplify right side
   8,810.79x = 63,567,588.61
5. Step 5: Solve for x
   x = 63,567,588.61/8,810.79
6. Step 6: Final answer
   x = 7,214.74