Finding the Fourth Proportional to 28,653.18, 39,559.83 and 19,697.82

Step by Step Solution

1. Step 1: Write the proportion equation
   28,653.18 : 39,559.83 = 19,697.82 : x
2. Step 2: Convert to fraction form
   28,653.18/39,559.83 = 19,697.82/x
3. Step 3: Cross multiply
   28,653.18x = 39,559.83 × 19,697.82
4. Step 4: Simplify right side
   28,653.18x = 779,242,410.57
5. Step 5: Solve for x
   x = 779,242,410.57/28,653.18
6. Step 6: Final answer
   x = 27,195.67