Finding the Fourth Proportional to 11,111.37, 16,661.58 and 4,535.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,111.37 : 16,661.58 = 4,535.79 : x
2. Step 2: Convert to fraction form
   11,111.37/16,661.58 = 4,535.79/x
3. Step 3: Cross multiply
   11,111.37x = 16,661.58 × 4,535.79
4. Step 4: Simplify right side
   11,111.37x = 75,573,427.95
5. Step 5: Solve for x
   x = 75,573,427.95/11,111.37
6. Step 6: Final answer
   x = 6,801.45