Finding the Fourth Proportional to 9,477.34, 13,078.56 and 5,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,477.34 : 13,078.56 = 5,285.50 : x
2. Step 2: Convert to fraction form
   9,477.34/13,078.56 = 5,285.50/x
3. Step 3: Cross multiply
   9,477.34x = 13,078.56 × 5,285.50
4. Step 4: Simplify right side
   9,477.34x = 69,126,728.88
5. Step 5: Solve for x
   x = 69,126,728.88/9,477.34
6. Step 6: Final answer
   x = 7,293.90