Finding the Fourth Proportional to 21,320.52, 31,973.52 and 7,275.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,320.52 : 31,973.52 = 7,275.12 : x
2. Step 2: Convert to fraction form
   21,320.52/31,973.52 = 7,275.12/x
3. Step 3: Cross multiply
   21,320.52x = 31,973.52 × 7,275.12
4. Step 4: Simplify right side
   21,320.52x = 232,611,194.82
5. Step 5: Solve for x
   x = 232,611,194.82/21,320.52
6. Step 6: Final answer
   x = 10,910.20