Finding the Fourth Proportional to 7,870,659.18, 10,855,728.06 and 5,216,706.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870,659.18 : 10,855,728.06 = 5,216,706.88 : x
2. Step 2: Convert to fraction form
   7,870,659.18/10,855,728.06 = 5,216,706.88/x
3. Step 3: Cross multiply
   7,870,659.18x = 10,855,728.06 × 5,216,706.88
4. Step 4: Simplify right side
   7,870,659.18x = 56,631,151,258,011.05
5. Step 5: Solve for x
   x = 56,631,151,258,011.05/7,870,659.18
6. Step 6: Final answer
   x = 7,195,223.42