Finding the Fourth Proportional to 11,500.61, 15,870.38 and 7,031.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,500.61 : 15,870.38 = 7,031.84 : x
2. Step 2: Convert to fraction form
   11,500.61/15,870.38 = 7,031.84/x
3. Step 3: Cross multiply
   11,500.61x = 15,870.38 × 7,031.84
4. Step 4: Simplify right side
   11,500.61x = 111,597,858.39
5. Step 5: Solve for x
   x = 111,597,858.39/11,500.61
6. Step 6: Final answer
   x = 9,703.65