Finding the Fourth Proportional to 5,498.51, 7,578.02 and 4,004.06

Step by Step Solution

1. Step 1: Write the proportion equation
   5,498.51 : 7,578.02 = 4,004.06 : x
2. Step 2: Convert to fraction form
   5,498.51/7,578.02 = 4,004.06/x
3. Step 3: Cross multiply
   5,498.51x = 7,578.02 × 4,004.06
4. Step 4: Simplify right side
   5,498.51x = 30,342,818.88
5. Step 5: Solve for x
   x = 30,342,818.88/5,498.51
6. Step 6: Final answer
   x = 5,518.38