Finding the Fourth Proportional to 13,059, 18,021.42 and 7,470

Step by Step Solution

1. Step 1: Write the proportion equation
   13,059 : 18,021.42 = 7,470 : x
2. Step 2: Convert to fraction form
   13,059/18,021.42 = 7,470/x
3. Step 3: Cross multiply
   13,059x = 18,021.42 × 7,470
4. Step 4: Simplify right side
   13,059x = 134,620,007.40
5. Step 5: Solve for x
   x = 134,620,007.40/13,059
6. Step 6: Final answer
   x = 10,308.60