Finding the Fourth Proportional to 12,014.23, 17,989.80 and 8,485.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,014.23 : 17,989.80 = 8,485.15 : x
2. Step 2: Convert to fraction form
   12,014.23/17,989.80 = 8,485.15/x
3. Step 3: Cross multiply
   12,014.23x = 17,989.80 × 8,485.15
4. Step 4: Simplify right side
   12,014.23x = 152,646,151.47
5. Step 5: Solve for x
   x = 152,646,151.47/12,014.23
6. Step 6: Final answer
   x = 12,705.45