Finding the Fourth Proportional to 21,510.37, 32,262.31 and 7,279.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510.37 : 32,262.31 = 7,279.21 : x
2. Step 2: Convert to fraction form
   21,510.37/32,262.31 = 7,279.21/x
3. Step 3: Cross multiply
   21,510.37x = 32,262.31 × 7,279.21
4. Step 4: Simplify right side
   21,510.37x = 234,844,129.58
5. Step 5: Solve for x
   x = 234,844,129.58/21,510.37
6. Step 6: Final answer
   x = 10,917.72