Finding the Fourth Proportional to 13,127.54, 18,113.18 and 7,824.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,127.54 : 18,113.18 = 7,824.12 : x
2. Step 2: Convert to fraction form
   13,127.54/18,113.18 = 7,824.12/x
3. Step 3: Cross multiply
   13,127.54x = 18,113.18 × 7,824.12
4. Step 4: Simplify right side
   13,127.54x = 141,719,693.90
5. Step 5: Solve for x
   x = 141,719,693.90/13,127.54
6. Step 6: Final answer
   x = 10,795.60