Finding the Fourth Proportional to 9,013.56, 12,439.62 and 5,477.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,013.56 : 12,439.62 = 5,477.12 : x
2. Step 2: Convert to fraction form
   9,013.56/12,439.62 = 5,477.12/x
3. Step 3: Cross multiply
   9,013.56x = 12,439.62 × 5,477.12
4. Step 4: Simplify right side
   9,013.56x = 68,133,291.49
5. Step 5: Solve for x
   x = 68,133,291.49/9,013.56
6. Step 6: Final answer
   x = 7,558.98