Finding the Fourth Proportional to 13,177.77, 19,766.59 and 3,317.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,177.77 : 19,766.59 = 3,317.05 : x
2. Step 2: Convert to fraction form
   13,177.77/19,766.59 = 3,317.05/x
3. Step 3: Cross multiply
   13,177.77x = 19,766.59 × 3,317.05
4. Step 4: Simplify right side
   13,177.77x = 65,566,807.10
5. Step 5: Solve for x
   x = 65,566,807.10/13,177.77
6. Step 6: Final answer
   x = 4,975.56