Finding the Fourth Proportional to 17,958.84, 24,780.24 and 10,406.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,958.84 : 24,780.24 = 10,406.40 : x
2. Step 2: Convert to fraction form
   17,958.84/24,780.24 = 10,406.40/x
3. Step 3: Cross multiply
   17,958.84x = 24,780.24 × 10,406.40
4. Step 4: Simplify right side
   17,958.84x = 257,873,089.54
5. Step 5: Solve for x
   x = 257,873,089.54/17,958.84
6. Step 6: Final answer
   x = 14,359.12