Finding the Fourth Proportional to 9,921.17, 14,810.76 and 9,574.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,921.17 : 14,810.76 = 9,574.89 : x
2. Step 2: Convert to fraction form
   9,921.17/14,810.76 = 9,574.89/x
3. Step 3: Cross multiply
   9,921.17x = 14,810.76 × 9,574.89
4. Step 4: Simplify right side
   9,921.17x = 141,811,397.82
5. Step 5: Solve for x
   x = 141,811,397.82/9,921.17
6. Step 6: Final answer
   x = 14,293.83