Finding the Fourth Proportional to 13,930.45, 19,224.32 and 7,642.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,930.45 : 19,224.32 = 7,642.82 : x
2. Step 2: Convert to fraction form
   13,930.45/19,224.32 = 7,642.82/x
3. Step 3: Cross multiply
   13,930.45x = 19,224.32 × 7,642.82
4. Step 4: Simplify right side
   13,930.45x = 146,928,017.38
5. Step 5: Solve for x
   x = 146,928,017.38/13,930.45
6. Step 6: Final answer
   x = 10,547.26