Finding the Fourth Proportional to 43,126.56, 64,658.72 and 13,528.48

Step by Step Solution

1. Step 1: Write the proportion equation
   43,126.56 : 64,658.72 = 13,528.48 : x
2. Step 2: Convert to fraction form
   43,126.56/64,658.72 = 13,528.48/x
3. Step 3: Cross multiply
   43,126.56x = 64,658.72 × 13,528.48
4. Step 4: Simplify right side
   43,126.56x = 874,734,200.35
5. Step 5: Solve for x
   x = 874,734,200.35/43,126.56
6. Step 6: Final answer
   x = 20,282.96