Finding the Fourth Proportional to 22,156,989.50, 30,577,701.75 and 12,499,197.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,156,989.50 : 30,577,701.75 = 12,499,197.50 : x
2. Step 2: Convert to fraction form
   22,156,989.50/30,577,701.75 = 12,499,197.50/x
3. Step 3: Cross multiply
   22,156,989.50x = 30,577,701.75 × 12,499,197.50
4. Step 4: Simplify right side
   22,156,989.50x = 382,196,733,269,345.62
5. Step 5: Solve for x
   x = 382,196,733,269,345.62/22,156,989.50
6. Step 6: Final answer
   x = 17,249,488.40