Finding the Fourth Proportional to 7,728,716.72, 10,665,212.58 and 4,290,736.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,728,716.72 : 10,665,212.58 = 4,290,736.52 : x
2. Step 2: Convert to fraction form
   7,728,716.72/10,665,212.58 = 4,290,736.52/x
3. Step 3: Cross multiply
   7,728,716.72x = 10,665,212.58 × 4,290,736.52
4. Step 4: Simplify right side
   7,728,716.72x = 45,761,617,137,232.45
5. Step 5: Solve for x
   x = 45,761,617,137,232.45/7,728,716.72
6. Step 6: Final answer
   x = 5,920,985.18