Finding the Fourth Proportional to 14,042.38, 21,079.77 and 7,131.46

Step by Step Solution

1. Step 1: Write the proportion equation
   14,042.38 : 21,079.77 = 7,131.46 : x
2. Step 2: Convert to fraction form
   14,042.38/21,079.77 = 7,131.46/x
3. Step 3: Cross multiply
   14,042.38x = 21,079.77 × 7,131.46
4. Step 4: Simplify right side
   14,042.38x = 150,329,395.51
5. Step 5: Solve for x
   x = 150,329,395.51/14,042.38
6. Step 6: Final answer
   x = 10,705.41