Finding the Fourth Proportional to 28,291.69, 42,446.74 and 13,498.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,291.69 : 42,446.74 = 13,498.69 : x
2. Step 2: Convert to fraction form
   28,291.69/42,446.74 = 13,498.69/x
3. Step 3: Cross multiply
   28,291.69x = 42,446.74 × 13,498.69
4. Step 4: Simplify right side
   28,291.69x = 572,975,244.91
5. Step 5: Solve for x
   x = 572,975,244.91/28,291.69
6. Step 6: Final answer
   x = 20,252.42