Finding the Fourth Proportional to 26,656,099.82, 39,998,903.78 and 13,009,359.25

Step by Step Solution

1. Step 1: Write the proportion equation
   26,656,099.82 : 39,998,903.78 = 13,009,359.25 : x
2. Step 2: Convert to fraction form
   26,656,099.82/39,998,903.78 = 13,009,359.25/x
3. Step 3: Cross multiply
   26,656,099.82x = 39,998,903.78 × 13,009,359.25
4. Step 4: Simplify right side
   26,656,099.82x = 520,360,108,762,123.69
5. Step 5: Solve for x
   x = 520,360,108,762,123.69/26,656,099.82
6. Step 6: Final answer
   x = 19,521,239.50