Finding the Fourth Proportional to 18,290.01, 27,436.64 and 5,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,290.01 : 27,436.64 = 5,142.50 : x
2. Step 2: Convert to fraction form
   18,290.01/27,436.64 = 5,142.50/x
3. Step 3: Cross multiply
   18,290.01x = 27,436.64 × 5,142.50
4. Step 4: Simplify right side
   18,290.01x = 141,092,758.30
5. Step 5: Solve for x
   x = 141,092,758.30/18,290.01
6. Step 6: Final answer
   x = 7,714.20