Finding the Fourth Proportional to 13,995.69, 19,314.31 and 7,622.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,995.69 : 19,314.31 = 7,622.47 : x
2. Step 2: Convert to fraction form
   13,995.69/19,314.31 = 7,622.47/x
3. Step 3: Cross multiply
   13,995.69x = 19,314.31 × 7,622.47
4. Step 4: Simplify right side
   13,995.69x = 147,222,748.55
5. Step 5: Solve for x
   x = 147,222,748.55/13,995.69
6. Step 6: Final answer
   x = 10,519.15