Finding the Fourth Proportional to 12,426,386.85, 18,640,656.68 and 3,792,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426,386.85 : 18,640,656.68 = 3,792,429.72 : x
2. Step 2: Convert to fraction form
   12,426,386.85/18,640,656.68 = 3,792,429.72/x
3. Step 3: Cross multiply
   12,426,386.85x = 18,640,656.68 × 3,792,429.72
4. Step 4: Simplify right side
   12,426,386.85x = 70,693,380,374,586.39
5. Step 5: Solve for x
   x = 70,693,380,374,586.39/12,426,386.85
6. Step 6: Final answer
   x = 5,688,973.09