Finding the Fourth Proportional to 12,870.30, 17,760.02 and 7,203.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.30 : 17,760.02 = 7,203.75 : x
2. Step 2: Convert to fraction form
   12,870.30/17,760.02 = 7,203.75/x
3. Step 3: Cross multiply
   12,870.30x = 17,760.02 × 7,203.75
4. Step 4: Simplify right side
   12,870.30x = 127,938,655.27
5. Step 5: Solve for x
   x = 127,938,655.27/12,870.30
6. Step 6: Final answer
   x = 9,940.62