Finding the Fourth Proportional to 14,426.02, 19,908.75 and 8,139.34

Step by Step Solution

1. Step 1: Write the proportion equation
   14,426.02 : 19,908.75 = 8,139.34 : x
2. Step 2: Convert to fraction form
   14,426.02/19,908.75 = 8,139.34/x
3. Step 3: Cross multiply
   14,426.02x = 19,908.75 × 8,139.34
4. Step 4: Simplify right side
   14,426.02x = 162,044,085.23
5. Step 5: Solve for x
   x = 162,044,085.23/14,426.02
6. Step 6: Final answer
   x = 11,232.76