Finding the Fourth Proportional to 13,032.94, 17,985.58 and 7,731.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,032.94 : 17,985.58 = 7,731.30 : x
2. Step 2: Convert to fraction form
   13,032.94/17,985.58 = 7,731.30/x
3. Step 3: Cross multiply
   13,032.94x = 17,985.58 × 7,731.30
4. Step 4: Simplify right side
   13,032.94x = 139,051,914.65
5. Step 5: Solve for x
   x = 139,051,914.65/13,032.94
6. Step 6: Final answer
   x = 10,669.27