Finding the Fourth Proportional to 8,809.17, 12,156.27 and 5,274.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,809.17 : 12,156.27 = 5,274.33 : x
2. Step 2: Convert to fraction form
   8,809.17/12,156.27 = 5,274.33/x
3. Step 3: Cross multiply
   8,809.17x = 12,156.27 × 5,274.33
4. Step 4: Simplify right side
   8,809.17x = 64,116,179.55
5. Step 5: Solve for x
   x = 64,116,179.55/8,809.17
6. Step 6: Final answer
   x = 7,278.35