Finding the Fourth Proportional to 12,012.89, 18,009.09 and 4,612.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,012.89 : 18,009.09 = 4,612.19 : x
2. Step 2: Convert to fraction form
   12,012.89/18,009.09 = 4,612.19/x
3. Step 3: Cross multiply
   12,012.89x = 18,009.09 × 4,612.19
4. Step 4: Simplify right side
   12,012.89x = 83,061,254.76
5. Step 5: Solve for x
   x = 83,061,254.76/12,012.89
6. Step 6: Final answer
   x = 6,914.35