Finding the Fourth Proportional to 11,111.14, 16,667.57 and 3,715.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,111.14 : 16,667.57 = 3,715.63 : x
2. Step 2: Convert to fraction form
   11,111.14/16,667.57 = 3,715.63/x
3. Step 3: Cross multiply
   11,111.14x = 16,667.57 × 3,715.63
4. Step 4: Simplify right side
   11,111.14x = 61,930,574.08
5. Step 5: Solve for x
   x = 61,930,574.08/11,111.14
6. Step 6: Final answer
   x = 5,573.74