Finding the Fourth Proportional to 13,587,579.43, 18,751,375.33 and 7,787,480.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,587,579.43 : 18,751,375.33 = 7,787,480.47 : x
2. Step 2: Convert to fraction form
   13,587,579.43/18,751,375.33 = 7,787,480.47/x
3. Step 3: Cross multiply
   13,587,579.43x = 18,751,375.33 × 7,787,480.47
4. Step 4: Simplify right side
   13,587,579.43x = 146,025,969,101,667.69
5. Step 5: Solve for x
   x = 146,025,969,101,667.69/13,587,579.43
6. Step 6: Final answer
   x = 10,747,018.62