Finding the Fourth Proportional to 12,776,878, 19,155,869.16 and 7,727,065.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,776,878 : 19,155,869.16 = 7,727,065.84 : x
2. Step 2: Convert to fraction form
   12,776,878/19,155,869.16 = 7,727,065.84/x
3. Step 3: Cross multiply
   12,776,878x = 19,155,869.16 × 7,727,065.84
4. Step 4: Simplify right side
   12,776,878x = 148,018,662,221,745.50
5. Step 5: Solve for x
   x = 148,018,662,221,745.50/12,776,878
6. Step 6: Final answer
   x = 11,584,884.99