Finding the Fourth Proportional to 9,015.49, 12,438.05 and 5,657.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,015.49 : 12,438.05 = 5,657.08 : x
2. Step 2: Convert to fraction form
   9,015.49/12,438.05 = 5,657.08/x
3. Step 3: Cross multiply
   9,015.49x = 12,438.05 × 5,657.08
4. Step 4: Simplify right side
   9,015.49x = 70,363,043.89
5. Step 5: Solve for x
   x = 70,363,043.89/9,015.49
6. Step 6: Final answer
   x = 7,804.68