Finding the Fourth Proportional to 13,131.48, 19,702.89 and 7,204.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.48 : 19,702.89 = 7,204.71 : x
2. Step 2: Convert to fraction form
   13,131.48/19,702.89 = 7,204.71/x
3. Step 3: Cross multiply
   13,131.48x = 19,702.89 × 7,204.71
4. Step 4: Simplify right side
   13,131.48x = 141,953,608.61
5. Step 5: Solve for x
   x = 141,953,608.61/13,131.48
6. Step 6: Final answer
   x = 10,810.18