Finding the Fourth Proportional to 12,408,920.72, 18,613,614.34 and 3,889,068.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,408,920.72 : 18,613,614.34 = 3,889,068.56 : x
2. Step 2: Convert to fraction form
   12,408,920.72/18,613,614.34 = 3,889,068.56/x
3. Step 3: Cross multiply
   12,408,920.72x = 18,613,614.34 × 3,889,068.56
4. Step 4: Simplify right side
   12,408,920.72x = 72,389,622,317,659.16
5. Step 5: Solve for x
   x = 72,389,622,317,659.16/12,408,920.72
6. Step 6: Final answer
   x = 5,833,675.95