Finding the Fourth Proportional to 23,991,818.19, 33,108,609.37 and 12,978,540.75

Step by Step Solution

1. Step 1: Write the proportion equation
   23,991,818.19 : 33,108,609.37 = 12,978,540.75 : x
2. Step 2: Convert to fraction form
   23,991,818.19/33,108,609.37 = 12,978,540.75/x
3. Step 3: Cross multiply
   23,991,818.19x = 33,108,609.37 × 12,978,540.75
4. Step 4: Simplify right side
   23,991,818.19x = 429,701,435,776,442.69
5. Step 5: Solve for x
   x = 429,701,435,776,442.69/23,991,818.19
6. Step 6: Final answer
   x = 17,910,332.28