Finding the Fourth Proportional to 9,726.39, 13,421.61 and 5,476.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,726.39 : 13,421.61 = 5,476.10 : x
2. Step 2: Convert to fraction form
   9,726.39/13,421.61 = 5,476.10/x
3. Step 3: Cross multiply
   9,726.39x = 13,421.61 × 5,476.10
4. Step 4: Simplify right side
   9,726.39x = 73,498,011.41
5. Step 5: Solve for x
   x = 73,498,011.41/9,726.39
6. Step 6: Final answer
   x = 7,556.56