Finding the Fourth Proportional to 30,839.46, 42,516.12 and 19,503.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,839.46 : 42,516.12 = 19,503.30 : x
2. Step 2: Convert to fraction form
   30,839.46/42,516.12 = 19,503.30/x
3. Step 3: Cross multiply
   30,839.46x = 42,516.12 × 19,503.30
4. Step 4: Simplify right side
   30,839.46x = 829,204,643.20
5. Step 5: Solve for x
   x = 829,204,643.20/30,839.46
6. Step 6: Final answer
   x = 26,887.78