Finding the Fourth Proportional to 9,621.93, 14,419.43 and 7,280.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,621.93 : 14,419.43 = 7,280.02 : x
2. Step 2: Convert to fraction form
   9,621.93/14,419.43 = 7,280.02/x
3. Step 3: Cross multiply
   9,621.93x = 14,419.43 × 7,280.02
4. Step 4: Simplify right side
   9,621.93x = 104,973,666.34
5. Step 5: Solve for x
   x = 104,973,666.34/9,621.93
6. Step 6: Final answer
   x = 10,909.83