Finding the Fourth Proportional to 9,630,870.18, 13,290,597.65 and 5,279,863.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630,870.18 : 13,290,597.65 = 5,279,863.15 : x
2. Step 2: Convert to fraction form
   9,630,870.18/13,290,597.65 = 5,279,863.15/x
3. Step 3: Cross multiply
   9,630,870.18x = 13,290,597.65 × 5,279,863.15
4. Step 4: Simplify right side
   9,630,870.18x = 70,172,536,728,764.89
5. Step 5: Solve for x
   x = 70,172,536,728,764.89/9,630,870.18
6. Step 6: Final answer
   x = 7,286,209.39