Finding the Fourth Proportional to 21,191,443.34, 31,791,903.42 and 7,728,271.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,191,443.34 : 31,791,903.42 = 7,728,271.34 : x
2. Step 2: Convert to fraction form
   21,191,443.34/31,791,903.42 = 7,728,271.34/x
3. Step 3: Cross multiply
   21,191,443.34x = 31,791,903.42 × 7,728,271.34
4. Step 4: Simplify right side
   21,191,443.34x = 245,696,456,044,834
5. Step 5: Solve for x
   x = 245,696,456,044,834/21,191,443.34
6. Step 6: Final answer
   x = 11,594,135.05