Finding the Fourth Proportional to 10,492.92, 15,615.54 and 10,143

Step by Step Solution

1. Step 1: Write the proportion equation
   10,492.92 : 15,615.54 = 10,143 : x
2. Step 2: Convert to fraction form
   10,492.92/15,615.54 = 10,143/x
3. Step 3: Cross multiply
   10,492.92x = 15,615.54 × 10,143
4. Step 4: Simplify right side
   10,492.92x = 158,388,422.22
5. Step 5: Solve for x
   x = 158,388,422.22/10,492.92
6. Step 6: Final answer
   x = 15,094.79