Finding the Fourth Proportional to 6,499,677.32, 8,978,897.76 and 5,191,211.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499,677.32 : 8,978,897.76 = 5,191,211.42 : x
2. Step 2: Convert to fraction form
   6,499,677.32/8,978,897.76 = 5,191,211.42/x
3. Step 3: Cross multiply
   6,499,677.32x = 8,978,897.76 × 5,191,211.42
4. Step 4: Simplify right side
   6,499,677.32x = 46,611,356,590,724.41
5. Step 5: Solve for x
   x = 46,611,356,590,724.41/6,499,677.32
6. Step 6: Final answer
   x = 7,171,333.94