Finding the Fourth Proportional to 9,280.86, 12,805.74 and 5,506.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.86 : 12,805.74 = 5,506.89 : x
2. Step 2: Convert to fraction form
   9,280.86/12,805.74 = 5,506.89/x
3. Step 3: Cross multiply
   9,280.86x = 12,805.74 × 5,506.89
4. Step 4: Simplify right side
   9,280.86x = 70,519,801.55
5. Step 5: Solve for x
   x = 70,519,801.55/9,280.86
6. Step 6: Final answer
   x = 7,598.41