Finding the Fourth Proportional to 19,877.34, 27,411.88 and 13,059.37

Step by Step Solution

1. Step 1: Write the proportion equation
   19,877.34 : 27,411.88 = 13,059.37 : x
2. Step 2: Convert to fraction form
   19,877.34/27,411.88 = 13,059.37/x
3. Step 3: Cross multiply
   19,877.34x = 27,411.88 × 13,059.37
4. Step 4: Simplify right side
   19,877.34x = 357,981,883.32
5. Step 5: Solve for x
   x = 357,981,883.32/19,877.34
6. Step 6: Final answer
   x = 18,009.55