Finding the Fourth Proportional to 12,980.80, 17,922.96 and 10,141.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.80 : 17,922.96 = 10,141.12 : x
2. Step 2: Convert to fraction form
   12,980.80/17,922.96 = 10,141.12/x
3. Step 3: Cross multiply
   12,980.80x = 17,922.96 × 10,141.12
4. Step 4: Simplify right side
   12,980.80x = 181,758,888.12
5. Step 5: Solve for x
   x = 181,758,888.12/12,980.80
6. Step 6: Final answer
   x = 14,002.13