Finding the Fourth Proportional to 13,003.28, 19,493.28 and 4,681.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.28 : 19,493.28 = 4,681.34 : x
2. Step 2: Convert to fraction form
   13,003.28/19,493.28 = 4,681.34/x
3. Step 3: Cross multiply
   13,003.28x = 19,493.28 × 4,681.34
4. Step 4: Simplify right side
   13,003.28x = 91,254,671.40
5. Step 5: Solve for x
   x = 91,254,671.40/13,003.28
6. Step 6: Final answer
   x = 7,017.82