Finding the Fourth Proportional to 11,970.56, 16,534.18 and 8,449.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,970.56 : 16,534.18 = 8,449.50 : x
2. Step 2: Convert to fraction form
   11,970.56/16,534.18 = 8,449.50/x
3. Step 3: Cross multiply
   11,970.56x = 16,534.18 × 8,449.50
4. Step 4: Simplify right side
   11,970.56x = 139,705,553.91
5. Step 5: Solve for x
   x = 139,705,553.91/11,970.56
6. Step 6: Final answer
   x = 11,670.76