Finding the Fourth Proportional to 35,388.18, 53,042.03 and 18,495.15

Step by Step Solution

1. Step 1: Write the proportion equation
   35,388.18 : 53,042.03 = 18,495.15 : x
2. Step 2: Convert to fraction form
   35,388.18/53,042.03 = 18,495.15/x
3. Step 3: Cross multiply
   35,388.18x = 53,042.03 × 18,495.15
4. Step 4: Simplify right side
   35,388.18x = 981,020,301.15
5. Step 5: Solve for x
   x = 981,020,301.15/35,388.18
6. Step 6: Final answer
   x = 27,721.69