Finding the Fourth Proportional to 39,159, 54,039.46 and 21,253.99

Step by Step Solution

1. Step 1: Write the proportion equation
   39,159 : 54,039.46 = 21,253.99 : x
2. Step 2: Convert to fraction form
   39,159/54,039.46 = 21,253.99/x
3. Step 3: Cross multiply
   39,159x = 54,039.46 × 21,253.99
4. Step 4: Simplify right side
   39,159x = 1,148,554,142.45
5. Step 5: Solve for x
   x = 1,148,554,142.45/39,159
6. Step 6: Final answer
   x = 29,330.53