Finding the Fourth Proportional to 13,030.56, 17,981.86 and 7,365.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,030.56 : 17,981.86 = 7,365.28 : x
2. Step 2: Convert to fraction form
   13,030.56/17,981.86 = 7,365.28/x
3. Step 3: Cross multiply
   13,030.56x = 17,981.86 × 7,365.28
4. Step 4: Simplify right side
   13,030.56x = 132,441,433.82
5. Step 5: Solve for x
   x = 132,441,433.82/13,030.56
6. Step 6: Final answer
   x = 10,163.91