Finding the Fourth Proportional to 12,667.39, 17,481.83 and 7,631.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.39 : 17,481.83 = 7,631.42 : x
2. Step 2: Convert to fraction form
   12,667.39/17,481.83 = 7,631.42/x
3. Step 3: Cross multiply
   12,667.39x = 17,481.83 × 7,631.42
4. Step 4: Simplify right side
   12,667.39x = 133,411,061.53
5. Step 5: Solve for x
   x = 133,411,061.53/12,667.39
6. Step 6: Final answer
   x = 10,531.85