Finding the Fourth Proportional to 13,459.23, 20,191.89 and 4,100.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,459.23 : 20,191.89 = 4,100.09 : x
2. Step 2: Convert to fraction form
   13,459.23/20,191.89 = 4,100.09/x
3. Step 3: Cross multiply
   13,459.23x = 20,191.89 × 4,100.09
4. Step 4: Simplify right side
   13,459.23x = 82,788,566.27
5. Step 5: Solve for x
   x = 82,788,566.27/13,459.23
6. Step 6: Final answer
   x = 6,151.06