Finding the Fourth Proportional to 21,384.96, 32,080.32 and 7,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,384.96 : 32,080.32 = 7,530.72 : x
2. Step 2: Convert to fraction form
   21,384.96/32,080.32 = 7,530.72/x
3. Step 3: Cross multiply
   21,384.96x = 32,080.32 × 7,530.72
4. Step 4: Simplify right side
   21,384.96x = 241,587,907.43
5. Step 5: Solve for x
   x = 241,587,907.43/21,384.96
6. Step 6: Final answer
   x = 11,297.09