Finding the Fourth Proportional to 25,870.08, 35,673.60 and 19,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,870.08 : 35,673.60 = 19,902.72 : x
2. Step 2: Convert to fraction form
   25,870.08/35,673.60 = 19,902.72/x
3. Step 3: Cross multiply
   25,870.08x = 35,673.60 × 19,902.72
4. Step 4: Simplify right side
   25,870.08x = 710,001,672.19
5. Step 5: Solve for x
   x = 710,001,672.19/25,870.08
6. Step 6: Final answer
   x = 27,444.90