Finding the Fourth Proportional to 12,998.58, 19,500.76 and 7,152.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,998.58 : 19,500.76 = 7,152.18 : x
2. Step 2: Convert to fraction form
   12,998.58/19,500.76 = 7,152.18/x
3. Step 3: Cross multiply
   12,998.58x = 19,500.76 × 7,152.18
4. Step 4: Simplify right side
   12,998.58x = 139,472,945.66
5. Step 5: Solve for x
   x = 139,472,945.66/12,998.58
6. Step 6: Final answer
   x = 10,729.86