Finding the Fourth Proportional to 13,298.72, 19,962.66 and 5,513

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.72 : 19,962.66 = 5,513 : x
2. Step 2: Convert to fraction form
   13,298.72/19,962.66 = 5,513/x
3. Step 3: Cross multiply
   13,298.72x = 19,962.66 × 5,513
4. Step 4: Simplify right side
   13,298.72x = 110,054,144.58
5. Step 5: Solve for x
   x = 110,054,144.58/13,298.72
6. Step 6: Final answer
   x = 8,275.54