Finding the Fourth Proportional to 30,867.86, 42,589.01 and 19,384.01

Step by Step Solution

1. Step 1: Write the proportion equation
   30,867.86 : 42,589.01 = 19,384.01 : x
2. Step 2: Convert to fraction form
   30,867.86/42,589.01 = 19,384.01/x
3. Step 3: Cross multiply
   30,867.86x = 42,589.01 × 19,384.01
4. Step 4: Simplify right side
   30,867.86x = 825,545,741.81
5. Step 5: Solve for x
   x = 825,545,741.81/30,867.86
6. Step 6: Final answer
   x = 26,744.51