Finding the Fourth Proportional to 13,005.06, 19,498.27 and 5,509.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,005.06 : 19,498.27 = 5,509.12 : x
2. Step 2: Convert to fraction form
   13,005.06/19,498.27 = 5,509.12/x
3. Step 3: Cross multiply
   13,005.06x = 19,498.27 × 5,509.12
4. Step 4: Simplify right side
   13,005.06x = 107,418,295.45
5. Step 5: Solve for x
   x = 107,418,295.45/13,005.06
6. Step 6: Final answer
   x = 8,259.73