Finding the Fourth Proportional to 11,981.34, 16,529.54 and 8,005.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,981.34 : 16,529.54 = 8,005.05 : x
2. Step 2: Convert to fraction form
   11,981.34/16,529.54 = 8,005.05/x
3. Step 3: Cross multiply
   11,981.34x = 16,529.54 × 8,005.05
4. Step 4: Simplify right side
   11,981.34x = 132,319,754.15
5. Step 5: Solve for x
   x = 132,319,754.15/11,981.34
6. Step 6: Final answer
   x = 11,043.82