Finding the Fourth Proportional to 14,135.42, 21,196.97 and 7,111.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,135.42 : 21,196.97 = 7,111.05 : x
2. Step 2: Convert to fraction form
   14,135.42/21,196.97 = 7,111.05/x
3. Step 3: Cross multiply
   14,135.42x = 21,196.97 × 7,111.05
4. Step 4: Simplify right side
   14,135.42x = 150,732,713.52
5. Step 5: Solve for x
   x = 150,732,713.52/14,135.42
6. Step 6: Final answer
   x = 10,663.48