Finding the Fourth Proportional to 12,397,914.48, 18,596,356.56 and 4,312,721.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,397,914.48 : 18,596,356.56 = 4,312,721.28 : x
2. Step 2: Convert to fraction form
   12,397,914.48/18,596,356.56 = 4,312,721.28/x
3. Step 3: Cross multiply
   12,397,914.48x = 18,596,356.56 × 4,312,721.28
4. Step 4: Simplify right side
   12,397,914.48x = 80,200,902,666,779.59
5. Step 5: Solve for x
   x = 80,200,902,666,779.59/12,397,914.48
6. Step 6: Final answer
   x = 6,468,902.72