Finding the Fourth Proportional to 12,001.89, 16,565.58 and 7,290.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,001.89 : 16,565.58 = 7,290.12 : x
2. Step 2: Convert to fraction form
   12,001.89/16,565.58 = 7,290.12/x
3. Step 3: Cross multiply
   12,001.89x = 16,565.58 × 7,290.12
4. Step 4: Simplify right side
   12,001.89x = 120,765,066.07
5. Step 5: Solve for x
   x = 120,765,066.07/12,001.89
6. Step 6: Final answer
   x = 10,062.17