Finding the Fourth Proportional to 13,123.56, 19,690.26 and 7,862.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.56 : 19,690.26 = 7,862.25 : x
2. Step 2: Convert to fraction form
   13,123.56/19,690.26 = 7,862.25/x
3. Step 3: Cross multiply
   13,123.56x = 19,690.26 × 7,862.25
4. Step 4: Simplify right side
   13,123.56x = 154,809,746.69
5. Step 5: Solve for x
   x = 154,809,746.69/13,123.56
6. Step 6: Final answer
   x = 11,796.32