Finding the Fourth Proportional to 51,196.17, 76,828.86 and 17,916.53

Step by Step Solution

1. Step 1: Write the proportion equation
   51,196.17 : 76,828.86 = 17,916.53 : x
2. Step 2: Convert to fraction form
   51,196.17/76,828.86 = 17,916.53/x
3. Step 3: Cross multiply
   51,196.17x = 76,828.86 × 17,916.53
4. Step 4: Simplify right side
   51,196.17x = 1,376,506,190.91
5. Step 5: Solve for x
   x = 1,376,506,190.91/51,196.17
6. Step 6: Final answer
   x = 26,886.90