Finding the Fourth Proportional to 9,056.19, 12,478.82 and 7,280.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,056.19 : 12,478.82 = 7,280.67 : x
2. Step 2: Convert to fraction form
   9,056.19/12,478.82 = 7,280.67/x
3. Step 3: Cross multiply
   9,056.19x = 12,478.82 × 7,280.67
4. Step 4: Simplify right side
   9,056.19x = 90,854,134.01
5. Step 5: Solve for x
   x = 90,854,134.01/9,056.19
6. Step 6: Final answer
   x = 10,032.27