Finding the Fourth Proportional to 28,499.61, 42,748.95 and 10,973.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.61 : 42,748.95 = 10,973.25 : x
2. Step 2: Convert to fraction form
   28,499.61/42,748.95 = 10,973.25/x
3. Step 3: Cross multiply
   28,499.61x = 42,748.95 × 10,973.25
4. Step 4: Simplify right side
   28,499.61x = 469,094,915.59
5. Step 5: Solve for x
   x = 469,094,915.59/28,499.61
6. Step 6: Final answer
   x = 16,459.70