Finding the Fourth Proportional to 9,521.17, 14,256.91 and 7,662.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.17 : 14,256.91 = 7,662.13 : x
2. Step 2: Convert to fraction form
   9,521.17/14,256.91 = 7,662.13/x
3. Step 3: Cross multiply
   9,521.17x = 14,256.91 × 7,662.13
4. Step 4: Simplify right side
   9,521.17x = 109,238,243.02
5. Step 5: Solve for x
   x = 109,238,243.02/9,521.17
6. Step 6: Final answer
   x = 11,473.20