Finding the Fourth Proportional to 9,404.01, 12,977.27 and 5,155.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404.01 : 12,977.27 = 5,155.16 : x
2. Step 2: Convert to fraction form
   9,404.01/12,977.27 = 5,155.16/x
3. Step 3: Cross multiply
   9,404.01x = 12,977.27 × 5,155.16
4. Step 4: Simplify right side
   9,404.01x = 66,899,812.55
5. Step 5: Solve for x
   x = 66,899,812.55/9,404.01
6. Step 6: Final answer
   x = 7,113.97