Finding the Fourth Proportional to 12,321.34, 16,997.52 and 8,070.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.34 : 16,997.52 = 8,070.56 : x
2. Step 2: Convert to fraction form
   12,321.34/16,997.52 = 8,070.56/x
3. Step 3: Cross multiply
   12,321.34x = 16,997.52 × 8,070.56
4. Step 4: Simplify right side
   12,321.34x = 137,179,577.77
5. Step 5: Solve for x
   x = 137,179,577.77/12,321.34
6. Step 6: Final answer
   x = 11,133.49