Finding the Fourth Proportional to 21,960,760.55, 30,288,178.55 and 19,305,931.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,960,760.55 : 30,288,178.55 = 19,305,931.61 : x
2. Step 2: Convert to fraction form
   21,960,760.55/30,288,178.55 = 19,305,931.61/x
3. Step 3: Cross multiply
   21,960,760.55x = 30,288,178.55 × 19,305,931.61
4. Step 4: Simplify right side
   21,960,760.55x = 584,741,503,429,798.50
5. Step 5: Solve for x
   x = 584,741,503,429,798.50/21,960,760.55
6. Step 6: Final answer
   x = 26,626,650.85