Finding the Fourth Proportional to 53,100.80, 79,651.20 and 21,936.86

Step by Step Solution

1. Step 1: Write the proportion equation
   53,100.80 : 79,651.20 = 21,936.86 : x
2. Step 2: Convert to fraction form
   53,100.80/79,651.20 = 21,936.86/x
3. Step 3: Cross multiply
   53,100.80x = 79,651.20 × 21,936.86
4. Step 4: Simplify right side
   53,100.80x = 1,747,296,824.98
5. Step 5: Solve for x
   x = 1,747,296,824.98/53,100.80
6. Step 6: Final answer
   x = 32,905.29