Finding the Fourth Proportional to 11,301.30, 16,919.55 and 10,977.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,301.30 : 16,919.55 = 10,977.30 : x
2. Step 2: Convert to fraction form
   11,301.30/16,919.55 = 10,977.30/x
3. Step 3: Cross multiply
   11,301.30x = 16,919.55 × 10,977.30
4. Step 4: Simplify right side
   11,301.30x = 185,730,976.22
5. Step 5: Solve for x
   x = 185,730,976.22/11,301.30
6. Step 6: Final answer
   x = 16,434.48