Finding the Fourth Proportional to 8,814.84, 13,196.29 and 7,721.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,814.84 : 13,196.29 = 7,721.34 : x
2. Step 2: Convert to fraction form
   8,814.84/13,196.29 = 7,721.34/x
3. Step 3: Cross multiply
   8,814.84x = 13,196.29 × 7,721.34
4. Step 4: Simplify right side
   8,814.84x = 101,893,041.83
5. Step 5: Solve for x
   x = 101,893,041.83/8,814.84
6. Step 6: Final answer
   x = 11,559.26