Finding the Fourth Proportional to 30,884.61, 42,620.45 and 17,272.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,884.61 : 42,620.45 = 17,272.50 : x
2. Step 2: Convert to fraction form
   30,884.61/42,620.45 = 17,272.50/x
3. Step 3: Cross multiply
   30,884.61x = 42,620.45 × 17,272.50
4. Step 4: Simplify right side
   30,884.61x = 736,161,509.52
5. Step 5: Solve for x
   x = 736,161,509.52/30,884.61
6. Step 6: Final answer
   x = 23,835.87