Finding the Fourth Proportional to 10,021,856.79, 13,830,200.31 and 5,438,178.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,021,856.79 : 13,830,200.31 = 5,438,178.18 : x
2. Step 2: Convert to fraction form
   10,021,856.79/13,830,200.31 = 5,438,178.18/x
3. Step 3: Cross multiply
   10,021,856.79x = 13,830,200.31 × 5,438,178.18
4. Step 4: Simplify right side
   10,021,856.79x = 75,211,093,550,871.23
5. Step 5: Solve for x
   x = 75,211,093,550,871.23/10,021,856.79
6. Step 6: Final answer
   x = 7,504,706.48