Finding the Fourth Proportional to 11,947,978.36, 17,916,368.82 and 4,369,644.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,947,978.36 : 17,916,368.82 = 4,369,644.28 : x
2. Step 2: Convert to fraction form
   11,947,978.36/17,916,368.82 = 4,369,644.28/x
3. Step 3: Cross multiply
   11,947,978.36x = 17,916,368.82 × 4,369,644.28
4. Step 4: Simplify right side
   11,947,978.36x = 78,288,158,532,683.36
5. Step 5: Solve for x
   x = 78,288,158,532,683.36/11,947,978.36
6. Step 6: Final answer
   x = 6,552,418.84