Finding the Fourth Proportional to 11,623.25, 17,400.51 and 7,667.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,623.25 : 17,400.51 = 7,667.21 : x
2. Step 2: Convert to fraction form
   11,623.25/17,400.51 = 7,667.21/x
3. Step 3: Cross multiply
   11,623.25x = 17,400.51 × 7,667.21
4. Step 4: Simplify right side
   11,623.25x = 133,413,277.27
5. Step 5: Solve for x
   x = 133,413,277.27/11,623.25
6. Step 6: Final answer
   x = 11,478.14