Finding the Fourth Proportional to 18,095.16, 24,971.76 and 10,139.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,095.16 : 24,971.76 = 10,139.10 : x
2. Step 2: Convert to fraction form
   18,095.16/24,971.76 = 10,139.10/x
3. Step 3: Cross multiply
   18,095.16x = 24,971.76 × 10,139.10
4. Step 4: Simplify right side
   18,095.16x = 253,191,171.82
5. Step 5: Solve for x
   x = 253,191,171.82/18,095.16
6. Step 6: Final answer
   x = 13,992.20