Finding the Fourth Proportional to 13,186,516.55, 19,764,028.43 and 5,510,146.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,186,516.55 : 19,764,028.43 = 5,510,146.55 : x
2. Step 2: Convert to fraction form
   13,186,516.55/19,764,028.43 = 5,510,146.55/x
3. Step 3: Cross multiply
   13,186,516.55x = 19,764,028.43 × 5,510,146.55
4. Step 4: Simplify right side
   13,186,516.55x = 108,902,693,040,115.69
5. Step 5: Solve for x
   x = 108,902,693,040,115.69/13,186,516.55
6. Step 6: Final answer
   x = 8,258,640.00