Finding the Fourth Proportional to 12,983.32, 17,916.73 and 7,318.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983.32 : 17,916.73 = 7,318.08 : x
2. Step 2: Convert to fraction form
   12,983.32/17,916.73 = 7,318.08/x
3. Step 3: Cross multiply
   12,983.32x = 17,916.73 × 7,318.08
4. Step 4: Simplify right side
   12,983.32x = 131,116,045.18
5. Step 5: Solve for x
   x = 131,116,045.18/12,983.32
6. Step 6: Final answer
   x = 10,098.81