Finding the Fourth Proportional to 12,802.56, 19,209.48 and 5,008.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,802.56 : 19,209.48 = 5,008.72 : x
2. Step 2: Convert to fraction form
   12,802.56/19,209.48 = 5,008.72/x
3. Step 3: Cross multiply
   12,802.56x = 19,209.48 × 5,008.72
4. Step 4: Simplify right side
   12,802.56x = 96,214,906.67
5. Step 5: Solve for x
   x = 96,214,906.67/12,802.56
6. Step 6: Final answer
   x = 7,515.29