Finding the Fourth Proportional to 13,145,736.38, 18,141,123.89 and 7,344,518.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,145,736.38 : 18,141,123.89 = 7,344,518.12 : x
2. Step 2: Convert to fraction form
   13,145,736.38/18,141,123.89 = 7,344,518.12/x
3. Step 3: Cross multiply
   13,145,736.38x = 18,141,123.89 × 7,344,518.12
4. Step 4: Simplify right side
   13,145,736.38x = 133,237,813,054,925.55
5. Step 5: Solve for x
   x = 133,237,813,054,925.55/13,145,736.38
6. Step 6: Final answer
   x = 10,135,439.29