Finding the Fourth Proportional to 8,781.01, 13,160.02 and 7,667.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,781.01 : 13,160.02 = 7,667.62 : x
2. Step 2: Convert to fraction form
   8,781.01/13,160.02 = 7,667.62/x
3. Step 3: Cross multiply
   8,781.01x = 13,160.02 × 7,667.62
4. Step 4: Simplify right side
   8,781.01x = 100,906,032.55
5. Step 5: Solve for x
   x = 100,906,032.55/8,781.01
6. Step 6: Final answer
   x = 11,491.39