Finding the Fourth Proportional to 5,036,947.72, 7,557,647.52 and 2,640,219.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,036,947.72 : 7,557,647.52 = 2,640,219.28 : x
2. Step 2: Convert to fraction form
   5,036,947.72/7,557,647.52 = 2,640,219.28/x
3. Step 3: Cross multiply
   5,036,947.72x = 7,557,647.52 × 2,640,219.28
4. Step 4: Simplify right side
   5,036,947.72x = 19,953,846,693,748.18
5. Step 5: Solve for x
   x = 19,953,846,693,748.18/5,036,947.72
6. Step 6: Final answer
   x = 3,961,495.69