Finding the Fourth Proportional to 11,867.31, 17,816.36 and 7,943.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,867.31 : 17,816.36 = 7,943.67 : x
2. Step 2: Convert to fraction form
   11,867.31/17,816.36 = 7,943.67/x
3. Step 3: Cross multiply
   11,867.31x = 17,816.36 × 7,943.67
4. Step 4: Simplify right side
   11,867.31x = 141,527,244.72
5. Step 5: Solve for x
   x = 141,527,244.72/11,867.31
6. Step 6: Final answer
   x = 11,925.81