Finding the Fourth Proportional to 11,456.14, 17,188.47 and 3,665.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,456.14 : 17,188.47 = 3,665.56 : x
2. Step 2: Convert to fraction form
   11,456.14/17,188.47 = 3,665.56/x
3. Step 3: Cross multiply
   11,456.14x = 17,188.47 × 3,665.56
4. Step 4: Simplify right side
   11,456.14x = 63,005,368.09
5. Step 5: Solve for x
   x = 63,005,368.09/11,456.14
6. Step 6: Final answer
   x = 5,499.70