Finding the Fourth Proportional to 11,518.72, 17,278.26 and 3,620.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,518.72 : 17,278.26 = 3,620.98 : x
2. Step 2: Convert to fraction form
   11,518.72/17,278.26 = 3,620.98/x
3. Step 3: Cross multiply
   11,518.72x = 17,278.26 × 3,620.98
4. Step 4: Simplify right side
   11,518.72x = 62,564,233.89
5. Step 5: Solve for x
   x = 62,564,233.89/11,518.72
6. Step 6: Final answer
   x = 5,431.53