Finding the Fourth Proportional to 30,838.56, 42,514.89 and 19,502.40

Step by Step Solution

1. Step 1: Write the proportion equation
   30,838.56 : 42,514.89 = 19,502.40 : x
2. Step 2: Convert to fraction form
   30,838.56/42,514.89 = 19,502.40/x
3. Step 3: Cross multiply
   30,838.56x = 42,514.89 × 19,502.40
4. Step 4: Simplify right side
   30,838.56x = 829,142,390.74
5. Step 5: Solve for x
   x = 829,142,390.74/30,838.56
6. Step 6: Final answer
   x = 26,886.55