Finding the Fourth Proportional to 7,128,924.90, 10,685,514.15 and 3,936,342.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,128,924.90 : 10,685,514.15 = 3,936,342.30 : x
2. Step 2: Convert to fraction form
   7,128,924.90/10,685,514.15 = 3,936,342.30/x
3. Step 3: Cross multiply
   7,128,924.90x = 10,685,514.15 × 3,936,342.30
4. Step 4: Simplify right side
   7,128,924.90x = 42,061,841,345,893.55
5. Step 5: Solve for x
   x = 42,061,841,345,893.55/7,128,924.90
6. Step 6: Final answer
   x = 5,900,166.15