Finding the Fourth Proportional to 21,499.09, 29,670.33 and 13,001.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.09 : 29,670.33 = 13,001.54 : x
2. Step 2: Convert to fraction form
   21,499.09/29,670.33 = 13,001.54/x
3. Step 3: Cross multiply
   21,499.09x = 29,670.33 × 13,001.54
4. Step 4: Simplify right side
   21,499.09x = 385,759,882.71
5. Step 5: Solve for x
   x = 385,759,882.71/21,499.09
6. Step 6: Final answer
   x = 17,943.08