Finding the Fourth Proportional to 21,879,576.76, 30,213,182.83 and 13,633,711.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,879,576.76 : 30,213,182.83 = 13,633,711.96 : x
2. Step 2: Convert to fraction form
   21,879,576.76/30,213,182.83 = 13,633,711.96/x
3. Step 3: Cross multiply
   21,879,576.76x = 30,213,182.83 × 13,633,711.96
4. Step 4: Simplify right side
   21,879,576.76x = 411,917,831,947,971.69
5. Step 5: Solve for x
   x = 411,917,831,947,971.69/21,879,576.76
6. Step 6: Final answer
   x = 18,826,590.50