Finding the Fourth Proportional to 10,164,123.96, 14,026,518.66 and 5,580,742.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,164,123.96 : 14,026,518.66 = 5,580,742.20 : x
2. Step 2: Convert to fraction form
   10,164,123.96/14,026,518.66 = 5,580,742.20/x
3. Step 3: Cross multiply
   10,164,123.96x = 14,026,518.66 × 5,580,742.20
4. Step 4: Simplify right side
   10,164,123.96x = 78,278,384,604,949.45
5. Step 5: Solve for x
   x = 78,278,384,604,949.45/10,164,123.96
6. Step 6: Final answer
   x = 7,701,439.39