Finding the Fourth Proportional to 19,978.95, 29,971.68 and 7,499.94

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978.95 : 29,971.68 = 7,499.94 : x
2. Step 2: Convert to fraction form
   19,978.95/29,971.68 = 7,499.94/x
3. Step 3: Cross multiply
   19,978.95x = 29,971.68 × 7,499.94
4. Step 4: Simplify right side
   19,978.95x = 224,785,801.70
5. Step 5: Solve for x
   x = 224,785,801.70/19,978.95
6. Step 6: Final answer
   x = 11,251.13