Finding the Fourth Proportional to 11,974.56, 17,943.12 and 7,807.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,974.56 : 17,943.12 = 7,807.20 : x
2. Step 2: Convert to fraction form
   11,974.56/17,943.12 = 7,807.20/x
3. Step 3: Cross multiply
   11,974.56x = 17,943.12 × 7,807.20
4. Step 4: Simplify right side
   11,974.56x = 140,085,526.46
5. Step 5: Solve for x
   x = 140,085,526.46/11,974.56
6. Step 6: Final answer
   x = 11,698.59