Finding the Fourth Proportional to 21,576,564.55, 32,377,615.50 and 7,939,287.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,576,564.55 : 32,377,615.50 = 7,939,287.31 : x
2. Step 2: Convert to fraction form
   21,576,564.55/32,377,615.50 = 7,939,287.31/x
3. Step 3: Cross multiply
   21,576,564.55x = 32,377,615.50 × 7,939,287.31
4. Step 4: Simplify right side
   21,576,564.55x = 257,055,191,867,209.28
5. Step 5: Solve for x
   x = 257,055,191,867,209.28/21,576,564.55
6. Step 6: Final answer
   x = 11,913,629.31