Finding the Fourth Proportional to 6,499,590.05, 8,978,777.04 and 5,191,124.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499,590.05 : 8,978,777.04 = 5,191,124.18 : x
2. Step 2: Convert to fraction form
   6,499,590.05/8,978,777.04 = 5,191,124.18/x
3. Step 3: Cross multiply
   6,499,590.05x = 8,978,777.04 × 5,191,124.18
4. Step 4: Simplify right side
   6,499,590.05x = 46,609,946,599,172.82
5. Step 5: Solve for x
   x = 46,609,946,599,172.82/6,499,590.05
6. Step 6: Final answer
   x = 7,171,213.30