Finding the Fourth Proportional to 11,420.64, 17,118.72 and 4,841.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,420.64 : 17,118.72 = 4,841.28 : x
2. Step 2: Convert to fraction form
   11,420.64/17,118.72 = 4,841.28/x
3. Step 3: Cross multiply
   11,420.64x = 17,118.72 × 4,841.28
4. Step 4: Simplify right side
   11,420.64x = 82,876,516.76
5. Step 5: Solve for x
   x = 82,876,516.76/11,420.64
6. Step 6: Final answer
   x = 7,256.73