Finding the Fourth Proportional to 19,139.01, 28,713.53 and 5,991.49

Step by Step Solution

1. Step 1: Write the proportion equation
   19,139.01 : 28,713.53 = 5,991.49 : x
2. Step 2: Convert to fraction form
   19,139.01/28,713.53 = 5,991.49/x
3. Step 3: Cross multiply
   19,139.01x = 28,713.53 × 5,991.49
4. Step 4: Simplify right side
   19,139.01x = 172,036,827.86
5. Step 5: Solve for x
   x = 172,036,827.86/19,139.01
6. Step 6: Final answer
   x = 8,988.80