Finding the Fourth Proportional to 12,109.64, 18,164.10 and 3,345.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.64 : 18,164.10 = 3,345.08 : x
2. Step 2: Convert to fraction form
   12,109.64/18,164.10 = 3,345.08/x
3. Step 3: Cross multiply
   12,109.64x = 18,164.10 × 3,345.08
4. Step 4: Simplify right side
   12,109.64x = 60,760,367.63
5. Step 5: Solve for x
   x = 60,760,367.63/12,109.64
6. Step 6: Final answer
   x = 5,017.52