Finding the Fourth Proportional to 13,025.81, 19,525.73 and 5,123.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,025.81 : 19,525.73 = 5,123.39 : x
2. Step 2: Convert to fraction form
   13,025.81/19,525.73 = 5,123.39/x
3. Step 3: Cross multiply
   13,025.81x = 19,525.73 × 5,123.39
4. Step 4: Simplify right side
   13,025.81x = 100,037,806.58
5. Step 5: Solve for x
   x = 100,037,806.58/13,025.81
6. Step 6: Final answer
   x = 7,679.97