Finding the Fourth Proportional to 21,081.24, 29,095.20 and 12,697.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,081.24 : 29,095.20 = 12,697.56 : x
2. Step 2: Convert to fraction form
   21,081.24/29,095.20 = 12,697.56/x
3. Step 3: Cross multiply
   21,081.24x = 29,095.20 × 12,697.56
4. Step 4: Simplify right side
   21,081.24x = 369,438,047.71
5. Step 5: Solve for x
   x = 369,438,047.71/21,081.24
6. Step 6: Final answer
   x = 17,524.49