Finding the Fourth Proportional to 13,003.25, 19,497.56 and 7,739.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.25 : 19,497.56 = 7,739.87 : x
2. Step 2: Convert to fraction form
   13,003.25/19,497.56 = 7,739.87/x
3. Step 3: Cross multiply
   13,003.25x = 19,497.56 × 7,739.87
4. Step 4: Simplify right side
   13,003.25x = 150,908,443.53
5. Step 5: Solve for x
   x = 150,908,443.53/13,003.25
6. Step 6: Final answer
   x = 11,605.44