Finding the Fourth Proportional to 12,878,071.47, 17,767,863.18 and 7,719,550.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,878,071.47 : 17,767,863.18 = 7,719,550.83 : x
2. Step 2: Convert to fraction form
   12,878,071.47/17,767,863.18 = 7,719,550.83/x
3. Step 3: Cross multiply
   12,878,071.47x = 17,767,863.18 × 7,719,550.83
4. Step 4: Simplify right side
   12,878,071.47x = 137,159,922,958,495.44
5. Step 5: Solve for x
   x = 137,159,922,958,495.44/12,878,071.47
6. Step 6: Final answer
   x = 10,650,657.07