Finding the Fourth Proportional to 14,081.34, 21,093.31 and 8,140.91

Step by Step Solution

1. Step 1: Write the proportion equation
   14,081.34 : 21,093.31 = 8,140.91 : x
2. Step 2: Convert to fraction form
   14,081.34/21,093.31 = 8,140.91/x
3. Step 3: Cross multiply
   14,081.34x = 21,093.31 × 8,140.91
4. Step 4: Simplify right side
   14,081.34x = 171,718,643.02
5. Step 5: Solve for x
   x = 171,718,643.02/14,081.34
6. Step 6: Final answer
   x = 12,194.76