Finding the Fourth Proportional to 11,111.49, 16,666.70 and 2,791.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,111.49 : 16,666.70 = 2,791.32 : x
2. Step 2: Convert to fraction form
   11,111.49/16,666.70 = 2,791.32/x
3. Step 3: Cross multiply
   11,111.49x = 16,666.70 × 2,791.32
4. Step 4: Simplify right side
   11,111.49x = 46,522,086.07
5. Step 5: Solve for x
   x = 46,522,086.07/11,111.49
6. Step 6: Final answer
   x = 4,186.84