Finding the Fourth Proportional to 8,810.65, 12,159.72 and 5,273.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,810.65 : 12,159.72 = 5,273.86 : x
2. Step 2: Convert to fraction form
   8,810.65/12,159.72 = 5,273.86/x
3. Step 3: Cross multiply
   8,810.65x = 12,159.72 × 5,273.86
4. Step 4: Simplify right side
   8,810.65x = 64,128,653.32
5. Step 5: Solve for x
   x = 64,128,653.32/8,810.65
6. Step 6: Final answer
   x = 7,278.54