Finding the Fourth Proportional to 5,551,139.59, 7,656,345.86 and 4,778,086.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,551,139.59 : 7,656,345.86 = 4,778,086.15 : x
2. Step 2: Convert to fraction form
   5,551,139.59/7,656,345.86 = 4,778,086.15/x
3. Step 3: Cross multiply
   5,551,139.59x = 7,656,345.86 × 4,778,086.15
4. Step 4: Simplify right side
   5,551,139.59x = 36,582,680,088,162.37
5. Step 5: Solve for x
   x = 36,582,680,088,162.37/5,551,139.59
6. Step 6: Final answer
   x = 6,590,120.73