Finding the Fourth Proportional to 13,930.82, 19,224.51 and 7,643.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,930.82 : 19,224.51 = 7,643.18 : x
2. Step 2: Convert to fraction form
   13,930.82/19,224.51 = 7,643.18/x
3. Step 3: Cross multiply
   13,930.82x = 19,224.51 × 7,643.18
4. Step 4: Simplify right side
   13,930.82x = 146,936,390.34
5. Step 5: Solve for x
   x = 146,936,390.34/13,930.82
6. Step 6: Final answer
   x = 10,547.58