Finding the Fourth Proportional to 9,604,820.20, 14,408,239.56 and 3,128,399.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,604,820.20 : 14,408,239.56 = 3,128,399.86 : x
2. Step 2: Convert to fraction form
   9,604,820.20/14,408,239.56 = 3,128,399.86/x
3. Step 3: Cross multiply
   9,604,820.20x = 14,408,239.56 × 3,128,399.86
4. Step 4: Simplify right side
   9,604,820.20x = 45,074,734,586,329.86
5. Step 5: Solve for x
   x = 45,074,734,586,329.86/9,604,820.20
6. Step 6: Final answer
   x = 4,692,928.52