Finding the Fourth Proportional to 10,585.89, 15,881.54 and 3,191.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,585.89 : 15,881.54 = 3,191.00 : x
2. Step 2: Convert to fraction form
   10,585.89/15,881.54 = 3,191.00/x
3. Step 3: Cross multiply
   10,585.89x = 15,881.54 × 3,191.00
4. Step 4: Simplify right side
   10,585.89x = 50,677,898.78
5. Step 5: Solve for x
   x = 50,677,898.78/10,585.89
6. Step 6: Final answer
   x = 4,787.31