Finding the Fourth Proportional to 11,456.18, 17,172.54 and 4,878.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,456.18 : 17,172.54 = 4,878.14 : x
2. Step 2: Convert to fraction form
   11,456.18/17,172.54 = 4,878.14/x
3. Step 3: Cross multiply
   11,456.18x = 17,172.54 × 4,878.14
4. Step 4: Simplify right side
   11,456.18x = 83,770,054.28
5. Step 5: Solve for x
   x = 83,770,054.28/11,456.18
6. Step 6: Final answer
   x = 7,312.22