Finding the Fourth Proportional to 43,110.72, 64,674.72 and 13,533.12

Step by Step Solution

1. Step 1: Write the proportion equation
   43,110.72 : 64,674.72 = 13,533.12 : x
2. Step 2: Convert to fraction form
   43,110.72/64,674.72 = 13,533.12/x
3. Step 3: Cross multiply
   43,110.72x = 64,674.72 × 13,533.12
4. Step 4: Simplify right side
   43,110.72x = 875,250,746.73
5. Step 5: Solve for x
   x = 875,250,746.73/43,110.72
6. Step 6: Final answer
   x = 20,302.39