Finding the Fourth Proportional to 9,780.21, 13,499.46 and 8,016.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,780.21 : 13,499.46 = 8,016.03 : x
2. Step 2: Convert to fraction form
   9,780.21/13,499.46 = 8,016.03/x
3. Step 3: Cross multiply
   9,780.21x = 13,499.46 × 8,016.03
4. Step 4: Simplify right side
   9,780.21x = 108,212,076.34
5. Step 5: Solve for x
   x = 108,212,076.34/9,780.21
6. Step 6: Final answer
   x = 11,064.39