Finding the Fourth Proportional to 13,015.50, 19,529.20 and 7,083.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,015.50 : 19,529.20 = 7,083.50 : x
2. Step 2: Convert to fraction form
   13,015.50/19,529.20 = 7,083.50/x
3. Step 3: Cross multiply
   13,015.50x = 19,529.20 × 7,083.50
4. Step 4: Simplify right side
   13,015.50x = 138,334,999.41
5. Step 5: Solve for x
   x = 138,334,999.41/13,015.50
6. Step 6: Final answer
   x = 10,628.48