Finding the Fourth Proportional to 12,747.53, 19,127.83 and 5,256.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,747.53 : 19,127.83 = 5,256.62 : x
2. Step 2: Convert to fraction form
   12,747.53/19,127.83 = 5,256.62/x
3. Step 3: Cross multiply
   12,747.53x = 19,127.83 × 5,256.62
4. Step 4: Simplify right side
   12,747.53x = 100,547,733.73
5. Step 5: Solve for x
   x = 100,547,733.73/12,747.53
6. Step 6: Final answer
   x = 7,887.62