Finding the Fourth Proportional to 28,613, 42,869.46 and 19,853.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,613 : 42,869.46 = 19,853.48 : x
2. Step 2: Convert to fraction form
   28,613/42,869.46 = 19,853.48/x
3. Step 3: Cross multiply
   28,613x = 42,869.46 × 19,853.48
4. Step 4: Simplify right side
   28,613x = 851,107,966.72
5. Step 5: Solve for x
   x = 851,107,966.72/28,613
6. Step 6: Final answer
   x = 29,745.50