Finding the Fourth Proportional to 28,146, 42,233.52 and 12,362.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,146 : 42,233.52 = 12,362.10 : x
2. Step 2: Convert to fraction form
   28,146/42,233.52 = 12,362.10/x
3. Step 3: Cross multiply
   28,146x = 42,233.52 × 12,362.10
4. Step 4: Simplify right side
   28,146x = 522,094,997.59
5. Step 5: Solve for x
   x = 522,094,997.59/28,146
6. Step 6: Final answer
   x = 18,549.53