Finding the Fourth Proportional to 9,178,816.15, 13,778,831.18 and 4,927,288.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,178,816.15 : 13,778,831.18 = 4,927,288.15 : x
2. Step 2: Convert to fraction form
   9,178,816.15/13,778,831.18 = 4,927,288.15/x
3. Step 3: Cross multiply
   9,178,816.15x = 13,778,831.18 × 4,927,288.15
4. Step 4: Simplify right side
   9,178,816.15x = 67,892,271,594,064.52
5. Step 5: Solve for x
   x = 67,892,271,594,064.52/9,178,816.15
6. Step 6: Final answer
   x = 7,396,626.15