Finding the Fourth Proportional to 5,516.71, 7,618.96 and 5,389.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,516.71 : 7,618.96 = 5,389.59 : x
2. Step 2: Convert to fraction form
   5,516.71/7,618.96 = 5,389.59/x
3. Step 3: Cross multiply
   5,516.71x = 7,618.96 × 5,389.59
4. Step 4: Simplify right side
   5,516.71x = 41,063,063.08
5. Step 5: Solve for x
   x = 41,063,063.08/5,516.71
6. Step 6: Final answer
   x = 7,443.40