Finding the Fourth Proportional to 12,465,432.06, 18,698,828.49 and 3,945,132.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,465,432.06 : 18,698,828.49 = 3,945,132.78 : x
2. Step 2: Convert to fraction form
   12,465,432.06/18,698,828.49 = 3,945,132.78/x
3. Step 3: Cross multiply
   12,465,432.06x = 18,698,828.49 × 3,945,132.78
4. Step 4: Simplify right side
   12,465,432.06x = 73,769,361,223,496.89
5. Step 5: Solve for x
   x = 73,769,361,223,496.89/12,465,432.06
6. Step 6: Final answer
   x = 5,917,914.51