Finding the Fourth Proportional to 31,870.08, 43,971.82 and 19,115.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.08 : 43,971.82 = 19,115.28 : x
2. Step 2: Convert to fraction form
   31,870.08/43,971.82 = 19,115.28/x
3. Step 3: Cross multiply
   31,870.08x = 43,971.82 × 19,115.28
4. Step 4: Simplify right side
   31,870.08x = 840,533,651.41
5. Step 5: Solve for x
   x = 840,533,651.41/31,870.08
6. Step 6: Final answer
   x = 26,373.75