Finding the Fourth Proportional to 14,012.38, 21,031.53 and 7,091.74

Step by Step Solution

1. Step 1: Write the proportion equation
   14,012.38 : 21,031.53 = 7,091.74 : x
2. Step 2: Convert to fraction form
   14,012.38/21,031.53 = 7,091.74/x
3. Step 3: Cross multiply
   14,012.38x = 21,031.53 × 7,091.74
4. Step 4: Simplify right side
   14,012.38x = 149,150,142.56
5. Step 5: Solve for x
   x = 149,150,142.56/14,012.38
6. Step 6: Final answer
   x = 10,644.17