Finding the Fourth Proportional to 7,121,300.91, 9,827,397.54 and 3,858,138.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,121,300.91 : 9,827,397.54 = 3,858,138.15 : x
2. Step 2: Convert to fraction form
   7,121,300.91/9,827,397.54 = 3,858,138.15/x
3. Step 3: Cross multiply
   7,121,300.91x = 9,827,397.54 × 3,858,138.15
4. Step 4: Simplify right side
   7,121,300.91x = 37,915,457,364,290.15
5. Step 5: Solve for x
   x = 37,915,457,364,290.15/7,121,300.91
6. Step 6: Final answer
   x = 5,324,231.88