Finding the Fourth Proportional to 13,951.69, 19,253.47 and 7,578.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,951.69 : 19,253.47 = 7,578.34 : x
2. Step 2: Convert to fraction form
   13,951.69/19,253.47 = 7,578.34/x
3. Step 3: Cross multiply
   13,951.69x = 19,253.47 × 7,578.34
4. Step 4: Simplify right side
   13,951.69x = 145,909,341.84
5. Step 5: Solve for x
   x = 145,909,341.84/13,951.69
6. Step 6: Final answer
   x = 10,458.18