Finding the Fourth Proportional to 9,011.52, 12,435.30 and 4,978.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,011.52 : 12,435.30 = 4,978.17 : x
2. Step 2: Convert to fraction form
   9,011.52/12,435.30 = 4,978.17/x
3. Step 3: Cross multiply
   9,011.52x = 12,435.30 × 4,978.17
4. Step 4: Simplify right side
   9,011.52x = 61,905,037.40
5. Step 5: Solve for x
   x = 61,905,037.40/9,011.52
6. Step 6: Final answer
   x = 6,869.54