Finding the Fourth Proportional to 28,373.94, 42,561.60 and 7,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,373.94 : 42,561.60 = 7,314.50 : x
2. Step 2: Convert to fraction form
   28,373.94/42,561.60 = 7,314.50/x
3. Step 3: Cross multiply
   28,373.94x = 42,561.60 × 7,314.50
4. Step 4: Simplify right side
   28,373.94x = 311,316,573.82
5. Step 5: Solve for x
   x = 311,316,573.82/28,373.94
6. Step 6: Final answer
   x = 10,971.92