Finding the Fourth Proportional to 21,991,289.82, 30,240,363.15 and 19,085,636.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,991,289.82 : 30,240,363.15 = 19,085,636.16 : x
2. Step 2: Convert to fraction form
   21,991,289.82/30,240,363.15 = 19,085,636.16/x
3. Step 3: Cross multiply
   21,991,289.82x = 30,240,363.15 × 19,085,636.16
4. Step 4: Simplify right side
   21,991,289.82x = 577,156,568,427,171.50
5. Step 5: Solve for x
   x = 577,156,568,427,171.50/21,991,289.82
6. Step 6: Final answer
   x = 26,244,780.24