Finding the Fourth Proportional to 11,775.32, 17,665.71 and 3,455.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,775.32 : 17,665.71 = 3,455.00 : x
2. Step 2: Convert to fraction form
   11,775.32/17,665.71 = 3,455.00/x
3. Step 3: Cross multiply
   11,775.32x = 17,665.71 × 3,455.00
4. Step 4: Simplify right side
   11,775.32x = 61,034,931.08
5. Step 5: Solve for x
   x = 61,034,931.08/11,775.32
6. Step 6: Final answer
   x = 5,183.29