Finding the Fourth Proportional to 12,980.01, 17,912.46 and 7,873.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.01 : 17,912.46 = 7,873.83 : x
2. Step 2: Convert to fraction form
   12,980.01/17,912.46 = 7,873.83/x
3. Step 3: Cross multiply
   12,980.01x = 17,912.46 × 7,873.83
4. Step 4: Simplify right side
   12,980.01x = 141,039,664.92
5. Step 5: Solve for x
   x = 141,039,664.92/12,980.01
6. Step 6: Final answer
   x = 10,865.91