Finding the Fourth Proportional to 11,783.79, 16,274.31 and 7,318.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,783.79 : 16,274.31 = 7,318.15 : x
2. Step 2: Convert to fraction form
   11,783.79/16,274.31 = 7,318.15/x
3. Step 3: Cross multiply
   11,783.79x = 16,274.31 × 7,318.15
4. Step 4: Simplify right side
   11,783.79x = 119,097,841.73
5. Step 5: Solve for x
   x = 119,097,841.73/11,783.79
6. Step 6: Final answer
   x = 10,106.92