Finding the Fourth Proportional to 6,499,715.32, 8,978,950.20 and 5,191,249.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499,715.32 : 8,978,950.20 = 5,191,249.48 : x
2. Step 2: Convert to fraction form
   6,499,715.32/8,978,950.20 = 5,191,249.48/x
3. Step 3: Cross multiply
   6,499,715.32x = 8,978,950.20 × 5,191,249.48
4. Step 4: Simplify right side
   6,499,715.32x = 46,611,970,556,695.90
5. Step 5: Solve for x
   x = 46,611,970,556,695.90/6,499,715.32
6. Step 6: Final answer
   x = 7,171,386.48