Finding the Fourth Proportional to 9,048.49, 12,488.15 and 5,070.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,048.49 : 12,488.15 = 5,070.45 : x
2. Step 2: Convert to fraction form
   9,048.49/12,488.15 = 5,070.45/x
3. Step 3: Cross multiply
   9,048.49x = 12,488.15 × 5,070.45
4. Step 4: Simplify right side
   9,048.49x = 63,320,477.73
5. Step 5: Solve for x
   x = 63,320,477.73/9,048.49
6. Step 6: Final answer
   x = 6,997.91