Finding the Fourth Proportional to 7,149,010.72, 9,865,634.16 and 3,929,746.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,149,010.72 : 9,865,634.16 = 3,929,746.72 : x
2. Step 2: Convert to fraction form
   7,149,010.72/9,865,634.16 = 3,929,746.72/x
3. Step 3: Cross multiply
   7,149,010.72x = 9,865,634.16 × 3,929,746.72
4. Step 4: Simplify right side
   7,149,010.72x = 38,769,443,480,979.96
5. Step 5: Solve for x
   x = 38,769,443,480,979.96/7,149,010.72
6. Step 6: Final answer
   x = 5,423,050.13