Finding the Fourth Proportional to 17,959.56, 24,784.05 and 10,405.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,959.56 : 24,784.05 = 10,405.72 : x
2. Step 2: Convert to fraction form
   17,959.56/24,784.05 = 10,405.72/x
3. Step 3: Cross multiply
   17,959.56x = 24,784.05 × 10,405.72
4. Step 4: Simplify right side
   17,959.56x = 257,895,884.77
5. Step 5: Solve for x
   x = 257,895,884.77/17,959.56
6. Step 6: Final answer
   x = 14,359.81