Finding the Fourth Proportional to 12,008.86, 17,991.72 and 7,326.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,008.86 : 17,991.72 = 7,326.45 : x
2. Step 2: Convert to fraction form
   12,008.86/17,991.72 = 7,326.45/x
3. Step 3: Cross multiply
   12,008.86x = 17,991.72 × 7,326.45
4. Step 4: Simplify right side
   12,008.86x = 131,815,436.99
5. Step 5: Solve for x
   x = 131,815,436.99/12,008.86
6. Step 6: Final answer
   x = 10,976.52