Finding the Fourth Proportional to 9,055.58, 12,496.72 and 5,278.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,055.58 : 12,496.72 = 5,278.46 : x
2. Step 2: Convert to fraction form
   9,055.58/12,496.72 = 5,278.46/x
3. Step 3: Cross multiply
   9,055.58x = 12,496.72 × 5,278.46
4. Step 4: Simplify right side
   9,055.58x = 65,963,436.65
5. Step 5: Solve for x
   x = 65,963,436.65/9,055.58
6. Step 6: Final answer
   x = 7,284.29