Finding the Fourth Proportional to 3,171,816.72, 4,377,111.12 and 1,721,511.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171,816.72 : 4,377,111.12 = 1,721,511.72 : x
2. Step 2: Convert to fraction form
   3,171,816.72/4,377,111.12 = 1,721,511.72/x
3. Step 3: Cross multiply
   3,171,816.72x = 4,377,111.12 × 1,721,511.72
4. Step 4: Simplify right side
   3,171,816.72x = 7,535,248,092,822.33
5. Step 5: Solve for x
   x = 7,535,248,092,822.33/3,171,816.72
6. Step 6: Final answer
   x = 2,375,688.37