Finding the Fourth Proportional to 21,947.80, 32,905.82 and 13,042.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,947.80 : 32,905.82 = 13,042.02 : x
2. Step 2: Convert to fraction form
   21,947.80/32,905.82 = 13,042.02/x
3. Step 3: Cross multiply
   21,947.80x = 32,905.82 × 13,042.02
4. Step 4: Simplify right side
   21,947.80x = 429,158,362.56
5. Step 5: Solve for x
   x = 429,158,362.56/21,947.80
6. Step 6: Final answer
   x = 19,553.59