Finding the Fourth Proportional to 10,505,499.80, 14,497,811.55 and 5,921,819.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505,499.80 : 14,497,811.55 = 5,921,819.96 : x
2. Step 2: Convert to fraction form
   10,505,499.80/14,497,811.55 = 5,921,819.96/x
3. Step 3: Cross multiply
   10,505,499.80x = 14,497,811.55 × 5,921,819.96
4. Step 4: Simplify right side
   10,505,499.80x = 85,853,429,740,619.48
5. Step 5: Solve for x
   x = 85,853,429,740,619.48/10,505,499.80
6. Step 6: Final answer
   x = 8,172,236.58