Finding the Fourth Proportional to 10,388,327.61, 14,335,641.85 and 5,678,513.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388,327.61 : 14,335,641.85 = 5,678,513.76 : x
2. Step 2: Convert to fraction form
   10,388,327.61/14,335,641.85 = 5,678,513.76/x
3. Step 3: Cross multiply
   10,388,327.61x = 14,335,641.85 × 5,678,513.76
4. Step 4: Simplify right side
   10,388,327.61x = 81,405,139,503,656.84
5. Step 5: Solve for x
   x = 81,405,139,503,656.84/10,388,327.61
6. Step 6: Final answer
   x = 7,836,212.20