Finding the Fourth Proportional to 9,355.93, 12,911.01 and 5,106.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.93 : 12,911.01 = 5,106.85 : x
2. Step 2: Convert to fraction form
   9,355.93/12,911.01 = 5,106.85/x
3. Step 3: Cross multiply
   9,355.93x = 12,911.01 × 5,106.85
4. Step 4: Simplify right side
   9,355.93x = 65,934,591.42
5. Step 5: Solve for x
   x = 65,934,591.42/9,355.93
6. Step 6: Final answer
   x = 7,047.36