Finding the Fourth Proportional to 13,929.96, 19,223.37 and 7,642.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,929.96 : 19,223.37 = 7,642.38 : x
2. Step 2: Convert to fraction form
   13,929.96/19,223.37 = 7,642.38/x
3. Step 3: Cross multiply
   13,929.96x = 19,223.37 × 7,642.38
4. Step 4: Simplify right side
   13,929.96x = 146,912,298.42
5. Step 5: Solve for x
   x = 146,912,298.42/13,929.96
6. Step 6: Final answer
   x = 10,546.50