Finding the Fourth Proportional to 30,618.30, 45,945.86 and 13,088.14

Step by Step Solution

1. Step 1: Write the proportion equation
   30,618.30 : 45,945.86 = 13,088.14 : x
2. Step 2: Convert to fraction form
   30,618.30/45,945.86 = 13,088.14/x
3. Step 3: Cross multiply
   30,618.30x = 45,945.86 × 13,088.14
4. Step 4: Simplify right side
   30,618.30x = 601,345,667.80
5. Step 5: Solve for x
   x = 601,345,667.80/30,618.30
6. Step 6: Final answer
   x = 19,640.07