Finding the Fourth Proportional to 8,591,554.72, 12,869,925.18 and 3,973,978

Step by Step Solution

1. Step 1: Write the proportion equation
   8,591,554.72 : 12,869,925.18 = 3,973,978 : x
2. Step 2: Convert to fraction form
   8,591,554.72/12,869,925.18 = 3,973,978/x
3. Step 3: Cross multiply
   8,591,554.72x = 12,869,925.18 × 3,973,978
4. Step 4: Simplify right side
   8,591,554.72x = 51,144,799,526,966.04
5. Step 5: Solve for x
   x = 51,144,799,526,966.04/8,591,554.72
6. Step 6: Final answer
   x = 5,952,915.53