Finding the Fourth Proportional to 13,020.51, 17,969.42 and 7,356.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,020.51 : 17,969.42 = 7,356.30 : x
2. Step 2: Convert to fraction form
   13,020.51/17,969.42 = 7,356.30/x
3. Step 3: Cross multiply
   13,020.51x = 17,969.42 × 7,356.30
4. Step 4: Simplify right side
   13,020.51x = 132,188,407.56
5. Step 5: Solve for x
   x = 132,188,407.56/13,020.51
6. Step 6: Final answer
   x = 10,152.32