Finding the Fourth Proportional to 12,688,077.51, 17,518,646.43 and 7,799,853.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688,077.51 : 17,518,646.43 = 7,799,853.69 : x
2. Step 2: Convert to fraction form
   12,688,077.51/17,518,646.43 = 7,799,853.69/x
3. Step 3: Cross multiply
   12,688,077.51x = 17,518,646.43 × 7,799,853.69
4. Step 4: Simplify right side
   12,688,077.51x = 136,642,879,000,840.83
5. Step 5: Solve for x
   x = 136,642,879,000,840.83/12,688,077.51
6. Step 6: Final answer
   x = 10,769,391.89