Finding the Fourth Proportional to 28,045.98, 42,081.34 and 13,265.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,045.98 : 42,081.34 = 13,265.52 : x
2. Step 2: Convert to fraction form
   28,045.98/42,081.34 = 13,265.52/x
3. Step 3: Cross multiply
   28,045.98x = 42,081.34 × 13,265.52
4. Step 4: Simplify right side
   28,045.98x = 558,230,857.40
5. Step 5: Solve for x
   x = 558,230,857.40/28,045.98
6. Step 6: Final answer
   x = 19,904.13