Finding the Fourth Proportional to 13,951.50, 19,253.10 and 7,578.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,951.50 : 19,253.10 = 7,578.12 : x
2. Step 2: Convert to fraction form
   13,951.50/19,253.10 = 7,578.12/x
3. Step 3: Cross multiply
   13,951.50x = 19,253.10 × 7,578.12
4. Step 4: Simplify right side
   13,951.50x = 145,902,302.17
5. Step 5: Solve for x
   x = 145,902,302.17/13,951.50
6. Step 6: Final answer
   x = 10,457.82