Finding the Fourth Proportional to 8,810.37, 12,159.72 and 5,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,810.37 : 12,159.72 = 5,274.72 : x
2. Step 2: Convert to fraction form
   8,810.37/12,159.72 = 5,274.72/x
3. Step 3: Cross multiply
   8,810.37x = 12,159.72 × 5,274.72
4. Step 4: Simplify right side
   8,810.37x = 64,139,118.28
5. Step 5: Solve for x
   x = 64,139,118.28/8,810.37
6. Step 6: Final answer
   x = 7,279.96