Finding the Fourth Proportional to 12,878,118.72, 17,767,928.24 and 7,719,598.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,878,118.72 : 17,767,928.24 = 7,719,598.08 : x
2. Step 2: Convert to fraction form
   12,878,118.72/17,767,928.24 = 7,719,598.08/x
3. Step 3: Cross multiply
   12,878,118.72x = 17,767,928.24 × 7,719,598.08
4. Step 4: Simplify right side
   12,878,118.72x = 137,161,264,727,081.77
5. Step 5: Solve for x
   x = 137,161,264,727,081.77/12,878,118.72
6. Step 6: Final answer
   x = 10,650,722.18