Finding the Fourth Proportional to 28,069.62, 42,067.52 and 13,282.77

Step by Step Solution

1. Step 1: Write the proportion equation
   28,069.62 : 42,067.52 = 13,282.77 : x
2. Step 2: Convert to fraction form
   28,069.62/42,067.52 = 13,282.77/x
3. Step 3: Cross multiply
   28,069.62x = 42,067.52 × 13,282.77
4. Step 4: Simplify right side
   28,069.62x = 558,773,225.84
5. Step 5: Solve for x
   x = 558,773,225.84/28,069.62
6. Step 6: Final answer
   x = 19,906.69