Finding the Fourth Proportional to 12,678.96, 19,006.02 and 5,288.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,678.96 : 19,006.02 = 5,288.52 : x
2. Step 2: Convert to fraction form
   12,678.96/19,006.02 = 5,288.52/x
3. Step 3: Cross multiply
   12,678.96x = 19,006.02 × 5,288.52
4. Step 4: Simplify right side
   12,678.96x = 100,513,716.89
5. Step 5: Solve for x
   x = 100,513,716.89/12,678.96
6. Step 6: Final answer
   x = 7,927.60