Finding the Fourth Proportional to 8,777.34, 12,116.43 and 8,540.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,777.34 : 12,116.43 = 8,540.37 : x
2. Step 2: Convert to fraction form
   8,777.34/12,116.43 = 8,540.37/x
3. Step 3: Cross multiply
   8,777.34x = 12,116.43 × 8,540.37
4. Step 4: Simplify right side
   8,777.34x = 103,478,795.28
5. Step 5: Solve for x
   x = 103,478,795.28/8,777.34
6. Step 6: Final answer
   x = 11,789.31