Finding the Fourth Proportional to 33,131.52, 49,697.05 and 13,409.79

Step by Step Solution

1. Step 1: Write the proportion equation
   33,131.52 : 49,697.05 = 13,409.79 : x
2. Step 2: Convert to fraction form
   33,131.52/49,697.05 = 13,409.79/x
3. Step 3: Cross multiply
   33,131.52x = 49,697.05 × 13,409.79
4. Step 4: Simplify right side
   33,131.52x = 666,426,971.89
5. Step 5: Solve for x
   x = 666,426,971.89/33,131.52
6. Step 6: Final answer
   x = 20,114.59