Finding the Fourth Proportional to 21,429.98, 32,146 and 10,345.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,429.98 : 32,146 = 10,345.99 : x
2. Step 2: Convert to fraction form
   21,429.98/32,146 = 10,345.99/x
3. Step 3: Cross multiply
   21,429.98x = 32,146 × 10,345.99
4. Step 4: Simplify right side
   21,429.98x = 332,582,194.54
5. Step 5: Solve for x
   x = 332,582,194.54/21,429.98
6. Step 6: Final answer
   x = 15,519.48