Finding the Fourth Proportional to 21,818,326, 30,109,280.24 and 12,526,495.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,818,326 : 30,109,280.24 = 12,526,495.28 : x
2. Step 2: Convert to fraction form
   21,818,326/30,109,280.24 = 12,526,495.28/x
3. Step 3: Cross multiply
   21,818,326x = 30,109,280.24 × 12,526,495.28
4. Step 4: Simplify right side
   21,818,326x = 377,163,756,810,557.25
5. Step 5: Solve for x
   x = 377,163,756,810,557.25/21,818,326
6. Step 6: Final answer
   x = 17,286,557.95