Finding the Fourth Proportional to 21,200.94, 31,796.55 and 9,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,200.94 : 31,796.55 = 9,517.50 : x
2. Step 2: Convert to fraction form
   21,200.94/31,796.55 = 9,517.50/x
3. Step 3: Cross multiply
   21,200.94x = 31,796.55 × 9,517.50
4. Step 4: Simplify right side
   21,200.94x = 302,623,664.63
5. Step 5: Solve for x
   x = 302,623,664.63/21,200.94
6. Step 6: Final answer
   x = 14,274.07