Finding the Fourth Proportional to 11,054.21, 16,578.77 and 3,156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,054.21 : 16,578.77 = 3,156.56 : x
2. Step 2: Convert to fraction form
   11,054.21/16,578.77 = 3,156.56/x
3. Step 3: Cross multiply
   11,054.21x = 16,578.77 × 3,156.56
4. Step 4: Simplify right side
   11,054.21x = 52,331,845.72
5. Step 5: Solve for x
   x = 52,331,845.72/11,054.21
6. Step 6: Final answer
   x = 4,734.11