Finding the Fourth Proportional to 45,870, 68,816.56 and 13,038

Step by Step Solution

1. Step 1: Write the proportion equation
   45,870 : 68,816.56 = 13,038 : x
2. Step 2: Convert to fraction form
   45,870/68,816.56 = 13,038/x
3. Step 3: Cross multiply
   45,870x = 68,816.56 × 13,038
4. Step 4: Simplify right side
   45,870x = 897,230,309.28
5. Step 5: Solve for x
   x = 897,230,309.28/45,870
6. Step 6: Final answer
   x = 19,560.29