Finding the Fourth Proportional to 12,667.55, 17,481.23 and 7,631.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.55 : 17,481.23 = 7,631.98 : x
2. Step 2: Convert to fraction form
   12,667.55/17,481.23 = 7,631.98/x
3. Step 3: Cross multiply
   12,667.55x = 17,481.23 × 7,631.98
4. Step 4: Simplify right side
   12,667.55x = 133,416,397.74
5. Step 5: Solve for x
   x = 133,416,397.74/12,667.55
6. Step 6: Final answer
   x = 10,532.14