Finding the Fourth Proportional to 43,179.96, 64,773.72 and 13,200.96

Step by Step Solution

1. Step 1: Write the proportion equation
   43,179.96 : 64,773.72 = 13,200.96 : x
2. Step 2: Convert to fraction form
   43,179.96/64,773.72 = 13,200.96/x
3. Step 3: Cross multiply
   43,179.96x = 64,773.72 × 13,200.96
4. Step 4: Simplify right side
   43,179.96x = 855,075,286.77
5. Step 5: Solve for x
   x = 855,075,286.77/43,179.96
6. Step 6: Final answer
   x = 19,802.60