Finding the Fourth Proportional to 18,424.17, 25,424.06 and 10,870.11

Step by Step Solution

1. Step 1: Write the proportion equation
   18,424.17 : 25,424.06 = 10,870.11 : x
2. Step 2: Convert to fraction form
   18,424.17/25,424.06 = 10,870.11/x
3. Step 3: Cross multiply
   18,424.17x = 25,424.06 × 10,870.11
4. Step 4: Simplify right side
   18,424.17x = 276,362,274.50
5. Step 5: Solve for x
   x = 276,362,274.50/18,424.17
6. Step 6: Final answer
   x = 14,999.99