Finding the Fourth Proportional to 12,191.71, 16,824.59 and 6,602.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,191.71 : 16,824.59 = 6,602.71 : x
2. Step 2: Convert to fraction form
   12,191.71/16,824.59 = 6,602.71/x
3. Step 3: Cross multiply
   12,191.71x = 16,824.59 × 6,602.71
4. Step 4: Simplify right side
   12,191.71x = 111,087,888.64
5. Step 5: Solve for x
   x = 111,087,888.64/12,191.71
6. Step 6: Final answer
   x = 9,111.76