Finding the Fourth Proportional to 13,008.05, 19,511.06 and 3,647.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,008.05 : 19,511.06 = 3,647.57 : x
2. Step 2: Convert to fraction form
   13,008.05/19,511.06 = 3,647.57/x
3. Step 3: Cross multiply
   13,008.05x = 19,511.06 × 3,647.57
4. Step 4: Simplify right side
   13,008.05x = 71,167,841.33
5. Step 5: Solve for x
   x = 71,167,841.33/13,008.05
6. Step 6: Final answer
   x = 5,471.06