Finding the Fourth Proportional to 7,149,858.72, 9,866,734.86 and 3,886,479.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,149,858.72 : 9,866,734.86 = 3,886,479.30 : x
2. Step 2: Convert to fraction form
   7,149,858.72/9,866,734.86 = 3,886,479.30/x
3. Step 3: Cross multiply
   7,149,858.72x = 9,866,734.86 × 3,886,479.30
4. Step 4: Simplify right side
   7,149,858.72x = 38,346,860,791,978.39
5. Step 5: Solve for x
   x = 38,346,860,791,978.39/7,149,858.72
6. Step 6: Final answer
   x = 5,363,303.29