Finding the Fourth Proportional to 30,619.37, 42,251.83 and 17,188

Step by Step Solution

1. Step 1: Write the proportion equation
   30,619.37 : 42,251.83 = 17,188 : x
2. Step 2: Convert to fraction form
   30,619.37/42,251.83 = 17,188/x
3. Step 3: Cross multiply
   30,619.37x = 42,251.83 × 17,188
4. Step 4: Simplify right side
   30,619.37x = 726,224,454.04
5. Step 5: Solve for x
   x = 726,224,454.04/30,619.37
6. Step 6: Final answer
   x = 23,717.81