Finding the Fourth Proportional to 11,937.72, 16,475.56 and 7,221.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,937.72 : 16,475.56 = 7,221.98 : x
2. Step 2: Convert to fraction form
   11,937.72/16,475.56 = 7,221.98/x
3. Step 3: Cross multiply
   11,937.72x = 16,475.56 × 7,221.98
4. Step 4: Simplify right side
   11,937.72x = 118,986,164.81
5. Step 5: Solve for x
   x = 118,986,164.81/11,937.72
6. Step 6: Final answer
   x = 9,967.24