Finding the Fourth Proportional to 13,025.78, 19,522.65 and 7,408.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,025.78 : 19,522.65 = 7,408.17 : x
2. Step 2: Convert to fraction form
   13,025.78/19,522.65 = 7,408.17/x
3. Step 3: Cross multiply
   13,025.78x = 19,522.65 × 7,408.17
4. Step 4: Simplify right side
   13,025.78x = 144,627,020.42
5. Step 5: Solve for x
   x = 144,627,020.42/13,025.78
6. Step 6: Final answer
   x = 11,103.13