Finding the Fourth Proportional to 13,062.30, 19,579.05 and 7,223.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,062.30 : 19,579.05 = 7,223.10 : x
2. Step 2: Convert to fraction form
   13,062.30/19,579.05 = 7,223.10/x
3. Step 3: Cross multiply
   13,062.30x = 19,579.05 × 7,223.10
4. Step 4: Simplify right side
   13,062.30x = 141,421,436.06
5. Step 5: Solve for x
   x = 141,421,436.06/13,062.30
6. Step 6: Final answer
   x = 10,826.69