Finding the Fourth Proportional to 13,322.56, 19,986 and 5,003.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.56 : 19,986 = 5,003.68 : x
2. Step 2: Convert to fraction form
   13,322.56/19,986 = 5,003.68/x
3. Step 3: Cross multiply
   13,322.56x = 19,986 × 5,003.68
4. Step 4: Simplify right side
   13,322.56x = 100,003,548.48
5. Step 5: Solve for x
   x = 100,003,548.48/13,322.56
6. Step 6: Final answer
   x = 7,506.33