Finding the Fourth Proportional to 12,857.59, 19,288.79 and 5,838.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,857.59 : 19,288.79 = 5,838.09 : x
2. Step 2: Convert to fraction form
   12,857.59/19,288.79 = 5,838.09/x
3. Step 3: Cross multiply
   12,857.59x = 19,288.79 × 5,838.09
4. Step 4: Simplify right side
   12,857.59x = 112,609,692.01
5. Step 5: Solve for x
   x = 112,609,692.01/12,857.59
6. Step 6: Final answer
   x = 8,758.23