Finding the Fourth Proportional to 9,819,911.18, 13,550,943.72 and 5,408,778.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819,911.18 : 13,550,943.72 = 5,408,778.36 : x
2. Step 2: Convert to fraction form
   9,819,911.18/13,550,943.72 = 5,408,778.36/x
3. Step 3: Cross multiply
   9,819,911.18x = 13,550,943.72 × 5,408,778.36
4. Step 4: Simplify right side
   9,819,911.18x = 73,294,051,150,313.91
5. Step 5: Solve for x
   x = 73,294,051,150,313.91/9,819,911.18
6. Step 6: Final answer
   x = 7,463,820.17