Finding the Fourth Proportional to 11,427.72, 17,127.48 and 5,185.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,427.72 : 17,127.48 = 5,185.96 : x
2. Step 2: Convert to fraction form
   11,427.72/17,127.48 = 5,185.96/x
3. Step 3: Cross multiply
   11,427.72x = 17,127.48 × 5,185.96
4. Step 4: Simplify right side
   11,427.72x = 88,822,426.18
5. Step 5: Solve for x
   x = 88,822,426.18/11,427.72
6. Step 6: Final answer
   x = 7,772.54