Finding the Fourth Proportional to 12,836.34, 19,238.61 and 7,272.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,836.34 : 19,238.61 = 7,272.82 : x
2. Step 2: Convert to fraction form
   12,836.34/19,238.61 = 7,272.82/x
3. Step 3: Cross multiply
   12,836.34x = 19,238.61 × 7,272.82
4. Step 4: Simplify right side
   12,836.34x = 139,918,998.90
5. Step 5: Solve for x
   x = 139,918,998.90/12,836.34
6. Step 6: Final answer
   x = 10,900.23