Finding the Fourth Proportional to 12,835.53, 17,711.78 and 7,529.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,835.53 : 17,711.78 = 7,529.31 : x
2. Step 2: Convert to fraction form
   12,835.53/17,711.78 = 7,529.31/x
3. Step 3: Cross multiply
   12,835.53x = 17,711.78 × 7,529.31
4. Step 4: Simplify right side
   12,835.53x = 133,357,444.63
5. Step 5: Solve for x
   x = 133,357,444.63/12,835.53
6. Step 6: Final answer
   x = 10,389.71