Finding the Fourth Proportional to 9,259,830.96, 12,778,428.69 and 5,129,853.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,259,830.96 : 12,778,428.69 = 5,129,853.45 : x
2. Step 2: Convert to fraction form
   9,259,830.96/12,778,428.69 = 5,129,853.45/x
3. Step 3: Cross multiply
   9,259,830.96x = 12,778,428.69 × 5,129,853.45
4. Step 4: Simplify right side
   9,259,830.96x = 65,551,466,500,975.48
5. Step 5: Solve for x
   x = 65,551,466,500,975.48/9,259,830.96
6. Step 6: Final answer
   x = 7,079,121.29