Finding the Fourth Proportional to 11,974.42, 17,902.50 and 10,145.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,974.42 : 17,902.50 = 10,145.98 : x
2. Step 2: Convert to fraction form
   11,974.42/17,902.50 = 10,145.98/x
3. Step 3: Cross multiply
   11,974.42x = 17,902.50 × 10,145.98
4. Step 4: Simplify right side
   11,974.42x = 181,638,406.95
5. Step 5: Solve for x
   x = 181,638,406.95/11,974.42
6. Step 6: Final answer
   x = 15,168.87