Finding the Fourth Proportional to 11,436.72, 17,111.04 and 10,607.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,436.72 : 17,111.04 = 10,607.28 : x
2. Step 2: Convert to fraction form
   11,436.72/17,111.04 = 10,607.28/x
3. Step 3: Cross multiply
   11,436.72x = 17,111.04 × 10,607.28
4. Step 4: Simplify right side
   11,436.72x = 181,501,592.37
5. Step 5: Solve for x
   x = 181,501,592.37/11,436.72
6. Step 6: Final answer
   x = 15,870.07