Finding the Fourth Proportional to 12,870.24, 17,760.24 and 7,491.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.24 : 17,760.24 = 7,491.84 : x
2. Step 2: Convert to fraction form
   12,870.24/17,760.24 = 7,491.84/x
3. Step 3: Cross multiply
   12,870.24x = 17,760.24 × 7,491.84
4. Step 4: Simplify right side
   12,870.24x = 133,056,876.44
5. Step 5: Solve for x
   x = 133,056,876.44/12,870.24
6. Step 6: Final answer
   x = 10,338.34