Finding the Fourth Proportional to 12,870.92, 17,762.24 and 7,205.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.92 : 17,762.24 = 7,205.48 : x
2. Step 2: Convert to fraction form
   12,870.92/17,762.24 = 7,205.48/x
3. Step 3: Cross multiply
   12,870.92x = 17,762.24 × 7,205.48
4. Step 4: Simplify right side
   12,870.92x = 127,985,465.08
5. Step 5: Solve for x
   x = 127,985,465.08/12,870.92
6. Step 6: Final answer
   x = 9,943.77