Finding the Fourth Proportional to 31,588.57, 47,387.99 and 11,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,588.57 : 47,387.99 = 11,868.72 : x
2. Step 2: Convert to fraction form
   31,588.57/47,387.99 = 11,868.72/x
3. Step 3: Cross multiply
   31,588.57x = 47,387.99 × 11,868.72
4. Step 4: Simplify right side
   31,588.57x = 562,434,784.67
5. Step 5: Solve for x
   x = 562,434,784.67/31,588.57
6. Step 6: Final answer
   x = 17,805.01