Finding the Fourth Proportional to 30,588.96, 42,210.84 and 17,160.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,588.96 : 42,210.84 = 17,160.12 : x
2. Step 2: Convert to fraction form
   30,588.96/42,210.84 = 17,160.12/x
3. Step 3: Cross multiply
   30,588.96x = 42,210.84 × 17,160.12
4. Step 4: Simplify right side
   30,588.96x = 724,343,079.70
5. Step 5: Solve for x
   x = 724,343,079.70/30,588.96
6. Step 6: Final answer
   x = 23,679.89