Finding the Fourth Proportional to 28,499.99, 42,749.51 and 10,973.61

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.99 : 42,749.51 = 10,973.61 : x
2. Step 2: Convert to fraction form
   28,499.99/42,749.51 = 10,973.61/x
3. Step 3: Cross multiply
   28,499.99x = 42,749.51 × 10,973.61
4. Step 4: Simplify right side
   28,499.99x = 469,116,395.56
5. Step 5: Solve for x
   x = 469,116,395.56/28,499.99
6. Step 6: Final answer
   x = 16,460.23