Finding the Fourth Proportional to 30,956.69, 42,719.40 and 17,529.21

Step by Step Solution

1. Step 1: Write the proportion equation
   30,956.69 : 42,719.40 = 17,529.21 : x
2. Step 2: Convert to fraction form
   30,956.69/42,719.40 = 17,529.21/x
3. Step 3: Cross multiply
   30,956.69x = 42,719.40 × 17,529.21
4. Step 4: Simplify right side
   30,956.69x = 748,837,333.67
5. Step 5: Solve for x
   x = 748,837,333.67/30,956.69
6. Step 6: Final answer
   x = 24,189.84