Finding the Fourth Proportional to 12,870.54, 17,762.19 and 7,205.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.54 : 17,762.19 = 7,205.82 : x
2. Step 2: Convert to fraction form
   12,870.54/17,762.19 = 7,205.82/x
3. Step 3: Cross multiply
   12,870.54x = 17,762.19 × 7,205.82
4. Step 4: Simplify right side
   12,870.54x = 127,991,143.95
5. Step 5: Solve for x
   x = 127,991,143.95/12,870.54
6. Step 6: Final answer
   x = 9,944.50